Hormones are the chemical communicators of which biological system?

Detritivorous are a group of animals that feed from dead organic material.

harles Darwin is renowned in many countries across the globe as the man who developed the Theory of Evolution. His theory sets about explaining the progressive changes that occur within species down the generations, as well as the formation of new species, when environmental pressures have differential effects on the reproductive success of all individuals.

Darwin's first observation illustrates this as evolution describes changes in inherited traits of populations through successive generations. To fully understand the science of ecology, one must first be able to grasp evolutionary concepts. Members of a population often vary in their inherited traits.

Oxygen is the most abundant element in the Earth's atmosphere.

The valence electrons are those found in the outermost energy level of an atom.

In the modern periodic table, elements are arranged in order of increasing atomic numbers. True

Elements can be classified as metals, nonmetals or metalloids. True

Nonmetals are good conductors of heat and electricity. False

Luster is a chemical property of metals. True

Halogens include fluorine, chlorine, bromine, iodine, and astatine. True

An element is a substance which cannot be split into simpler units by a ordinary chemical process

So therefore, Oxygen is the most abundant element in the Earth's atmosphere.

Learn more about elements:

https://brainly.com/question/11252068

#SPJ1

Answer:

The diameter of the field of view for the high power objective lens (50X) can be calculated using the following formula:

Field of view (mm) = Ruler size (mm) / Magnification

Plugging in the values given in the question, we get:

Field of view (mm) = 1.5 mm / 50X

This simplifies to:

Field of view (mm) = 0.03 mm

So the diameter of the field of view for the high power objective lens (50X) is 0.03 mm.

Explanation:

Answer:  calcium and phosphorus.

Explanation: Both calcium and phosphorus work together to support bone health and development.  Consuming a balanced diet rich in calcium and phosphorus, along with regular physical activity, can help promote optimal bone growth and prevent conditions like osteoporosis later in life.

Calcium is an essential mineral that plays a vital role in building and maintaining strong bones. It is the primary component of bone tissue, providing strength and structure.  Adequate calcium intake is crucial for bone growth, especially during childhood and adolescence.

Phosphorus is another mineral that is important for bone development. It works in conjunction with calcium to form the mineralized matrix of bones. Phosphorus helps in the formation of hydroxyapatite, which is a mineral complex that gives bones their strength and hardness.

Learn more about bone development here: https://brainly.com/question/27913492.

Answer: D someone running at a constant speed and direction

Explanation:

The brain and spinal cord are part of the central nervous system.

The electrical charges that act as nervous signals are called action potentials or nerve impulses.

Jellyfish do not have a brain. Instead, their nervous system is called a nerve net.

After nervous systems began to develop in bilaterally symmetric animals, some developed ventral nerve cords, while chordates developed dorsal nerve cords.

Skeletons that allow for movement by using muscles and squeezing liquid to change the body shape are called hydrostatic skeletons.

Exoskeletons do not grow with arthropods, and so occasionally must be shed and regrown from chitin.

Muscles move endo- and exoskeletons by contracting and relaxing.

Fertilization is the joining of two gametes called sperm and egg.

A fish that lays her eggs in a cluster is initiating cluster or mass fertilization.

Amniotic eggs are an adaptation by reptiles to allow for reproduction and embryo development on land.

Describe three different strategies used by three different animals to thermoregulate.

If you see a snake coiled up in a sunny patch of grass, what can you probably conclude about the type of thermoregulator it is. Why?

If you see a snake coiled up in a sunny patch of grass, you can probably conclude that the snake is an ectotherm. Ectotherms rely on external heat sources, such as the sun, to regulate their body temperature. By basking in the sun, the snake absorbs heat, which helps raise its body temperature to a suitable level for proper physiological functioning.

Answer:

1. central

2. action potential

3. nerve net

4. dorsal

5. hydrostatic

6. Exoskeletons

7. contraction/contracting

8. Fertilization

9. external fertilization

10. Eggs

11. Animals with fur thermoregulate by panting. Winged birds will flap against their mouths/heads to dissipate heat. Humans will produce sweat to evaporatively cool. Polar bears have developed blubber. Bears drop body temperatures during hibernation.

12. Seeing a snake using the warmth of the sun leads us to conclude that it is likely a thermo conformer that cannot produce its own body heat.

Answer:

part 1 : 20 chromosomes to form a diploid zygote

20 + 26 = 46 ( diploid).it is called meiosis

part 2 : the flower cell (somatic cell) contains 26 chromosomes then the cell (somatic cell) within the stem of a flower would also contain 26 chromosomes. The process is called mitosis.

:)

An ecosystem is a group of living things and the natural surroundings in which they live.

To learn more about ecosystem refer

https://brainly.com/question/842527

#SPJ1

Answer:

Natural selection.

Explanation:

Imagine in the beginning there was a single species of bird. Naturally, this bird had to expand to the rest of the world, and was distanced as the continents drifted off. But this bird had to cope with various climates and environments. So the bird would gradually mutate over time. The bird in the jungles of central america would develop different colors and a shaped beak, and would better help it survive. This led to being the new normal for birds of this area. It would evolve to cover all the surviving birds in the region, until it is so drastically changed then it is a new species. There are so many different environments, each with its own challenges to overcome, so so many different bird evolve to survive them.

Answer:

Boreal forest is among the largest terrestrial biomes on earth in which minerals in the soil most rapidly depleted.

Answer:

graphite

Explanation:

graphite is a mineral resource used to make batteries

Graphite is the mineral that is frequently utilized to create batteries. So, the correct option is A.

A crystalline form of carbon that is found in nature is called graphite. Due to its special qualities, this mineral, which is exceptionally smooth and slippery, is frequently employed in a variety of applications. Due of its propensity to create a trace on paper, graphite is one of the materials that is most frequently found in pencils.

In addition to being used in pencils, graphite is also employed in lubricants, nuclear reactor moderators, batteries, and other electrical devices as electrodes. It is a good heat- and electricity-conductor and is generally chemically stable. Graphite is frequently obtained either open pit mines or underground mines and is typically found in metamorphic rocks.

Therefore, the correct option is A.

Learn more about Graphite, here:

https://brainly.com/question/28690064

#SPJ2

Your question is incomplete, most probably the complete question is:

Which mineral resource is used to make batteries?

The image represents the continental-continental boundary. When two continental plates collide, that's another kind of convergent plate boundary. The continental lithosphere is very thick and has a low density. The continental lithosphere cannot subduct. So when two mainland plates impact, they simply crush together.

Plate tectonic boundaries come in three varieties: plate boundaries that are transformed, divergent, and convergent. The three primary types of plate boundaries are depicted in this image: transform, convergent and divergent.

Learn more about continental-continental boundaries, here

https://brainly.com/question/2507413

#SPJ1

While a general association between skull size and brain capacity exists, the intricacies of brain development and cognitive abilities extend beyond skull size alone.

The associations between skull size and brain capacity can provide valuable insights into the relationship between these two variables. Here are some observations that can be made:

1- Generally, there is a positive correlation between skull size and brain capacity. Larger skulls tend to accommodate larger brains. This is because the skull acts as a protective casing for the brain, and as the brain grows, the skull expands to accommodate it.

2- However, it is important to note that skull size alone does not provide a complete measure of brain capacity or intelligence. There can be variations in brain size within individuals with similar skull sizes, and factors such as brain structure, neural connections, and neuronal density also influence cognitive abilities.

3- Comparisons across species can reveal variations in the relationship between skull size and brain capacity. For example, some species may exhibit larger skulls relative to their brain sizes, suggesting adaptations for other functions such as jaw strength or sensory capabilities.

for more questions on brain

https://brainly.com/question/30591648

#SPJ11

>>Convert DNA to mRNA so it will be easier to read the codon table for the amino acids.<<

mRNA sequence (original DNA): 3' AUG-GCG-AAU-GCA-GAC-UAG 5'

mRNA sequence (mutated DNA): 3' AUG-UAG-GCG-AAU-GCA-GAC-UAG 5'

Type of mutation: Frameshift mutation. It is a type of mutation wherein there is an insertion (adding) or a deletion (removing) of one or more nucleotides that changes the reading frame of the base sequence.

Amino acid sequence: Refer to the genetic codon table.

For Original DNA sequence: Met-Ala-Asn-Ala-Asp-Stop

For Mutated DNA sequence: Met-Stop-Ala-Asn-Ala-Asp-Stop

Answer:

As the DNA double helix is unwound by helicase, replication occurs separately on each template strand in antiparallel directions. This process is known as semi-conservative replication because two copies of the original DNA molecule are produced. Each copy contains one original strand and one newly-synthesized strand.

Explanation:

Answer:

In DNA and RNA, guanine forms three hydrogen bonds with cytosine. Three bonds are formed between these bases as a result of the fact that guanine possesses two nitrogen and one oxygen atoms that can form hydrogen bonds. Given the spatial restrictions of the double helix, which call for there to be one purine and one pyrimidine in each base pair, A always pairs with T and G always pairs with C as these are the only combinations that for hydrogen bonding to take place.

Answer:

Explanation:

When a meal containing fried fish and toast bread is consumed, it goes through a series of processes in the digestive system of a human. Here's a general description of how the components are processed:

1. Mouth: The process of digestion begins in the mouth. Chewing breaks down the toast bread and fish into smaller pieces, while saliva mixes with the food to start the breakdown of carbohydrates.

2. Esophagus: The chewed food, now called a bolus, is swallowed and travels down the esophagus through peristaltic contractions. The esophagus carries the food to the stomach.

3. Stomach: The stomach is responsible for further mechanical and chemical digestion. It mixes the food with stomach acid and digestive enzymes to break down proteins. The fried fish is broken down into smaller pieces through mechanical churning.

4. Small Intestine: The partially digested food leaves the stomach and enters the small intestine. Here, bile from the liver and enzymes from the pancreas break down fats, while other enzymes continue the breakdown of proteins and carbohydrates. Nutrient absorption occurs through the walls of the small intestine and is facilitated by small finger-like projections called villi.

5. Large Intestine: Any remaining undigested food, as well as water and electrolytes, pass into the large intestine. The large intestine absorbs water and electrolytes while forming waste material known as feces.

6. Rectum and Anus: The feces are stored in the rectum until elimination through the anus occurs during a bowel movement.

Throughout this process, various digestive enzymes and gastric juices are secreted at different stages to facilitate the breakdown and absorption of nutrients. The fried fish and toast bread are broken down into smaller molecules, such as proteins, carbohydrates, and fats, which are then absorbed into the bloodstream to provide energy and nourishment for the body.

A. Independent variable: Type and amount of light. B. control group: plant on the window. C. Experimental groups: plant in the cupboard and plant under the lamp. D. Depend variable: Plant growth.

It refers to all the variables in an experiment that provoke a response in another variable.

The researcher can modify these variables to see what changes it implies in an object, process, trait, or anything that depends on them.

It refers to the variable that depends on any change in the independent variable.

Any change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable.

The control group must be selected from the same population as the treatment group.

Data from an experimental group are compared with the data from a control group.  

Except for the exposure to the independent variable, both groups are identical.

In the exposed example,

A. What is the independent variable?

The type and amount of light ⇒ It affects the plants growth

B. Which plant is the control group?

The plant on the window that receives natural light ⇒ it is exposed to receives natural day light

C. Which two plants are the experimental groups?

The plant in the cupboard and the one under the lamp ⇒ they are under changes in the type of light and hours exposed to it.

D. What is the depend variable?

Plant growth ⇒ this is how plants respond to the change in light

You will learn more about variables and control/experimental groups at

https://brainly.com/question/1479694

https://brainly.com/question/12999020

#SPJ1

Answer:

b.

Explanation:

work

The root type for the ICD-10 code for this case is E, which stands for Injury.

The PCS code for this case is 949.2, which stands for Electroconvulsive therapy, bilateral, single seizure. The root type E is used for codes that describe injuries, poisonings, and certain other consequences of external causes.

The PCS code 949.2 is used to describe electroconvulsive therapy, which is a treatment for some types of mental illness. The bilateral-single seizure modifier indicates that the electroconvulsive therapy was delivered to both sides of the brain and that only one seizure was induced.

Find out more on PCS code here: https://brainly.com/question/24981657

#SPJ1

Answer:

Differ

Explanation:

This question seem straight forward but it is descriptive. Exact processes and steps used research usually differ among different fields in science and even scientists. The reasons for this are different.

For instance, scientists try new steps and processes so as to improve on previous processes and safe time. Processes also differ so as to optimize the data used and collected during the course of an experiment.

Some research processes (of a field) also have some processes other research fields do not have, for instance, medical research could include clinical trial while a normal and independent botanical research does not include clinical trial.

Answer:

The crane has a sharp and pointed beak adapted for catching and grasping prey. The sharp beak allows the crane to effectively stab and pierce its prey, such as fish, frogs, or small animals. The pointed shape helps the crane to accurately target its prey and secure a firm grip.

On the other hand, the duck has a flat beak, which is better suited for its specific feeding habits. Ducks are primarily filter feeders, and their flat beak enables them to sift through water or mud to collect small organisms, insects, and plants. The flat beak acts like a sieve, allowing the duck to strain out food particles while retaining water.

The difference in beak shape between the crane and the duck reflects their distinct feeding strategies and ecological roles. Each species has evolved its beak shape to optimize its ability to capture and consume the specific types of food sources available in their respective habitats.

Vanessa has a better absolute threshold and more sensitive difference threshold than Carlton, and Carlton has an impaired absolute threshold.

Carlton and Vanessa were lab partners for a biology class and were asked to run a smell test experiment on each other.

Vanessa was excellent at noticing the difference between various intensities of vanilla and evergreen.

Carlton, on the other hand, couldn't distinguish the difference in the intensities of both vanilla and evergreen, though he could tell the smells of both.

Hence, based on the information provided in the scenario, it can be inferred that Vanessa has a more sensitive difference threshold than Carlton, and Carlton has an impaired absolute threshold.

The two significant aspects that are involved in the scenario are absolute threshold and difference threshold.

The absolute threshold is the smallest quantity of a stimulus that an individual can detect, whereas the difference threshold is the minimum difference in stimuli that an individual can detect.

Carlton could recognize the stimuli's smell but not the difference in the intensity of vanilla and evergreen.

This shows that Carlton has an impaired absolute threshold.

He could not detect the smallest quantity of a stimulus to differentiate between the smells.

Vanessa was quite good at noticing the difference in the intensities of vanilla and evergreen.

This means that Vanessa has a more sensitive difference threshold than Carlton. She could detect the minimum difference in stimuli required to differentiate between smells.

Vanessa also has a better absolute threshold than Carlton as she could detect the smallest quantity of stimulus required to detect the smells.

For more such questions on threshold

https://brainly.com/question/30556914

#SPJ8

Answer:

gang gang

Explanation:

Research proposal on "Freshwater fish pond" would follow the format provided below.

Research Proposal: "Freshwater Fish Pond"

Introduction:

Aquaculture has been growing as a vital food source for many countries, and freshwater fish farming has become a popular form of aquaculture. Freshwater fish farming provides an affordable source of protein, employment opportunities, and economic growth to many developing nations. A freshwater fish pond is a controlled environment that allows fish to grow and thrive, providing a sustainable source of food for communities. The purpose of this research is to investigate the potential of freshwater fish farming in developing countries and explore the benefits of this form of aquaculture.

Objectives:

To determine the feasibility of freshwater fish farming in developing countries.

To identify the most suitable fish species for freshwater fish farming.

To evaluate the environmental impact of freshwater fish farming.

To analyze the economic benefits of freshwater fish farming.

Methodology:

The study will begin by conducting a comprehensive literature review of previous research studies related to freshwater fish farming. The research will be conducted using both primary and secondary data sources. Primary data will be collected through fieldwork and interviews with fish farmers and industry experts in developing countries. Secondary data will be collected through online databases and scientific articles. The study will also involve the collection and analysis of water samples from fish ponds to evaluate the water quality and the presence of any contaminants.

Expected Outcomes:

The research is expected to provide insight into the feasibility of freshwater fish farming in developing countries. The study will identify the most suitable fish species for freshwater fish farming, evaluate the environmental impact of freshwater fish farming, and analyze the economic benefits of freshwater fish farming. The study will also provide recommendations on how to improve freshwater fish farming practices and overcome any challenges that may arise.

References:

Food and Agriculture Organization of the United Nations. (2018). The State of World Fisheries and Aquaculture. Rome.

Tacon, A. G. J., & Metian, M. (2015). Global overview on the use of fish meal and fish oil in industrially compounded aquafeeds: Trends and future prospects. Aquaculture, 1-8.

Lin, C. K., & Lin, Y. H. (2018). Environmental issues of freshwater fish farming in Taiwan. Reviews in Aquaculture, 10(2), 358-370.

Papanikos, N., & Daskalov, H. (2019). Economics of fish farming in Europe: lessons learned and way forward. Journal of Agricultural Economics, 70(3), 703-721.

Bostock, J., McAndrew, B., Richards, R., Jauncey, K., Telfer, T., Lorenzen, K., & Little, D. (2010). Aquaculture: global status and trends. Philosophical Transactions of the Royal Society B: Biological Sciences, 365(1554), 2897-2912.

Find out more on proposal writing here: https://brainly.com/question/857262

#SPJ1