3. Which of these methods uses rock layer and bones to support the
theory of evolution? *
20 points
a. Embryology
b. Biogeography
c. Molecular biology
d. Fossil record

Answer:

not all structures that look alike are due to common ancestry. Analogous structures evolved independently in different organisms because the organisms lived in similar environments or experienced similar selective pressure.

Explanation:i know

The organisms that feed on dead and decaying matter are called Saprotrophs.

An organism that feeds on dead and decaying organic matter is called a saprotroph. These organisms are heterotrophic, which means that they obtain their food from other sources. They are important in the ecosystem because they break down dead organic matter and recycle it back into the soil, making nutrients available to other living organisms

Answer:

A. Saprotrophs

Explanation:

Saprotrophs are organisms that obtain their nutrients by feeding on dead and decaying matter. They play a crucial role in the ecosystem by decomposing organic material and recycling nutrients back into the environment.

These organisms secrete enzymes that break down complex organic compounds into simpler substances, such as sugars and amino acids, which they can absorb and utilize for their own growth and energy needs. Examples of saprotrophs include fungi (such as mushrooms and molds) and certain bacteria.

Unlike autotrophs, which can produce their own food through photosynthesis or chemosynthesis, saprotrophs rely on external sources of organic matter for their nutrition. They actively decompose dead plants, animals, and other organic materials, aiding in the process of nutrient recycling and decomposition.

Heterotrophs, on the other hand, are a broader category of organisms that obtain their nutrients by consuming other living or dead organisms. This includes saprotrophs, as well as other types of organisms such as herbivores, carnivores, and omnivores.

Parasites, meanwhile, are organisms that live in or on other organisms, known as hosts, and obtain their nutrients from the host while causing harm or damage to it. Unlike saprotrophs, parasites typically rely on a living host for their sustenance rather than feeding on dead and decaying matter.

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Answer:

The answer is Mycellium.

Explanation:

Hope this helps! :)

Answer:

D

Explanation:

I'm pretty sure this is the answer

(Love your pfp btw)

An example of an R-selected species would be one that produces a large number of progeny with small size. So, the correct option is C.

R-selected species are characterized by their reproductive strategy, which focuses on producing a large number of offspring with relatively small size. These species prioritize quantity over quality when it comes to offspring production.

Option ''Large number of progeny with small size'' represents an example of an R-selected species. These species typically have a high reproductive rate and invest minimal resources in individual offspring. By producing a large number of progeny, they increase the chances of survival and successful reproduction in unpredictable or unstable environments.

Therefore, the correct option is C.

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Complete Question:

Which of the following would be an example of an R-selected species?

Answer:

As light intensity increases (distance between lamp and plant decreases) the volume of oxygen (or the rate of bubble production) increases. This indicates that the rate of photosynthesis increases with light intensity. However, at sufficiently high levels of light intensity, the rate oxygen evolution remains constant.

Answer: The biotic components of the environment are the living which beings that interact with the abiotic component of the environment. Abiotic components are non-living like air, water, soil, atmosphere, and others. The biotic components require abiotic components for their survival and the abiotic components get recycled due to the utilization by the living beings.

Explanation:

Questionnaire that can be related with the interdependence of the biotic and abiotic component:

1. How abiotic components are related to biotic components?

2. How abiotic components affect the functioning and survival of the biotic components?

3. What will be the impact on biotic components if all the abiotic factors are removed from their surrounding environment?

4. How water cycle gets disturbed due to deforestation?

5. How carbon cycle gets affected by the deforestation and pollution increases in the region of deforestation?

Answer:

Pyruvate

Explanation:

Glycolysis refers to the pathway through glucose is oxidized to pyruvate.

In glycolysis, a molecule of glucose passes through ten enzyme catalyzed steps to yield two molecules of pyruvate.

Step 1: Glucose is phosphorylated to form glucose-6-phosphate

Step 2: Glucose-6-phosphate is converted to fructose-6-phosphate

Step 3: Fructose-6-phosphate is further phosphorylated to form fructose-1,6-bisphosphate

Step 4: Fructose-1,6-bisphosphate is cleaved into glyceraldehyde-3-phosphate and dihydroxyacetone phosphate

Step 5: Dihydroxyacetone phosphate is converted to another molecule of glyceraldehyde-3-phosphate.

Step 6: Two molecules of Glyceraldehyde-3-phosphate are converted to two molecules of 1,3-bisphosphoglycerate

Step 7: Two molecules of 1,3-bisphosphoglycerate are converted to 3-phosphoglycerate

Step 8: Two molecules of 3-phosphoglycerate are converted to two molecules of 2-phosphoglycerate

Step 9: Two molecules of 2-phosphoglycerate are converted to two molecules of phosphoenolpyruvate

Step 10: Two molecules of phosphoenolpyruvate are converted to two molecules of  pyruvate, the end-product of glycolysis.

Therefore, the presence of pyruvate molecules in red blood cells can be used to test for their ability to complete glycolysis

Answer:

50%

Explanation:

Make a punnet square

     Xn  Xn

XN XNXn XNXn

Y   XnY XnY

Colorblind is a recessive trait (n) so the fraction is 2/4

If a colorblind female (XnXn) and a normal male (XNY) have a son, then the chances he would be colorblind is 50%.

          Xn           Xn

XN   XNXn        XNXn

Y       XnY           XnY

In conclusion, if a colorblind female (XnXn) and a normal male (XNY) have a son, then the chances he would be colorblind is 50%.

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Answer:

c

Explanation:

Answer:

sting ray's are not mammals they have jaws but they are Cartilaginous fish

Explanation:

because they are related to sharks so yeah

hope this helps

Answer: Ground?

Explanation: plant come from ground

This question is incomplete and options are not clear; here, is the complete and correct question:

Which substance is a solid?  

A.Object 1

B. Object 2

C.Object 3

D. Object 4

This chart shows descriptions of the atoms for four different substances:

Object- Description of Four Substances

Object 1- Slide past each other

Object 2-Are very viscous

Object 3-Form a crystal

Object 4- Spread out to fill their container

The correct answer to this question is C. Object 3- Form a crystal

Explanation:

The formation of crystals or crystallization is a process that occurs only in solids because in these particles are extremely organized and placed together, which forms defined structures or crystals. Additionally, due to crystallization and the organization of particles, solids always have a defined shape and volume, which means they do not adapt to a container. Moreover, particles only vibrate but do not move freely. Thus, the fact the substance form a crystal shows this is a solid.

Answer:

c

Explanation:

Answer:

your answer is C

Explanation:

Answer:

Look on the Internet, there are answer keys. But you need to change the writing because your teacher uses the same one.

Explanation:

Answer:all of them

Explanation:

Makes sense

Gram staining is a laboratory test that can help diagnose the presence of the bacterial infection quickly and it also helps to diagnose the harmful bacteria.

Under Gram Stain: There are certain stain which change colours under specific type of stains and are classified as Gram positive and Gram negative based on this.

The steps of Gram Stain Procedure in order are

1. Applying a primary stain (crystal violet).

2. Adding a mordant- generally-IODINE

3. Rapid decolorization with ethanol, acetone or a mixture of both.

4. Counterstaining with safranin.

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Anaphase occurs during the M phase (mitosis) of the cell cycle and is not represented by any of the provided options (A, B, C, or D).

Therefore, the correct answer is not provided in the given options. Anaphase occurs during the M phase or mitosis and is not associated with any specific phase (A, B, C, or D) mentioned in the question.

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The specific properties of the most desired organic semiconductors for solar panel technology may evolve as advancements are made in the field.

In the context of solar panel technology, the most desired type of organic semiconductors would typically possess the following characteristics:

High Efficiency: The organic semiconductors should have a high power conversion efficiency, meaning they can efficiently convert sunlight into electricity. This is crucial for maximizing the electricity output of solar panels.

Tunable Bandgap: Organic semiconductors with a tunable bandgap would be advantageous. The bandgap determines the range of light wavelengths that can be absorbed by the material. A tunable bandgap allows for optimization to match the solar spectrum, enabling better absorption of sunlight and improved overall efficiency.

Long Operational Lifetime: The organic semiconductors should be stable and exhibit a long operational lifetime. Solar panels are expected to endure outdoor conditions for many years, so the materials used should be resistant to degradation, such as from exposure to UV radiation or moisture.

Scalability and Low Cost: Manufacturers aim to produce organic semiconductors on a large scale at a low cost. Therefore, desirable organic semiconductors should be readily synthesized using cost-effective methods and be compatible with high-volume manufacturing processes.

Environmental Friendliness: Organic semiconductors that are environmentally friendly and have low toxicity are desirable. This is aligned with the goal of sustainable and clean energy technologies.

It is important to note that the field of organic semiconductor research is still evolving, and scientists are continually working to improve the performance and characteristics of these materials.

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Answer: 2 haploid cells, 10 chromosomes each.

Explanation: meiosis produces haploid gametes from the parent cell.

Because it is environmently friendly and doesn't cause air pollution.

Toxic waste occasionally leaks to nearby ponds. That is option 1.

Mining is a process used by geologist to extract valuable minerals that are naturally deposited within the earth.

Example of such minerals are:

While mining processes are carried out, it leads to the generation of waste products such as:

These mining wastes can leak into the nearby ponds after a heavy down pour leading to the contamination of the ponds.

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Answer:toxic waste is typically dumped in nearby ponds

Explanation:

Answer:

properties: high surface tension

high latent heat of vaporization

cohesion and adhesion

high specific heat capacity

excellent solvent

it is polar

structure:

two hydrogen and one oxygen bonded covalently at 109⁰, water uses hydrogen bonds to bond with other water.

Answer:

Water erosion

Explanation:

An allergic reaction develops after the second exposure to an allergen as a result of a chain of events.

Although the first exposure does not result in symptoms, it may render people susceptible to the allergen (a process known as sensitization).

More severe responses could result from repeated exposures. After someone has been exposed to an allergen or experienced an allergic reaction (becomes sensitised), even a very brief exposure to an allergen might result in a severe reaction.

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Answer:

See the answer below

Explanation:

The results of surveys are most likely unreliable because surveys generally deal with questions that require value judgements or reporting beliefs. Consequently, there is no way to ascertain the objectiveness of responders and in most cases, responses are often biased.

Most survey questions are themselves inherently biased and only honest responses can make their results to be reliable. Unfortunately, there is no way to determine the veracity of responses. However, the unreliability of surveys reduces as the number of responders to the survey increases.

Temperatures within the stratosphere increase with altitude because of the absorption of ultraviolet radiation.

Hence, option C is correct.

The second layer of the Earth's atmosphere, the stratosphere, is situated below the mesosphere and above the troposphere. The stratosphere is a layer of the atmosphere made up of stratified temperature layers, with warm layers of air high in the sky and cool layers of air low in the sky, not far from the Earth's surface. The Sun's ultraviolet (UV) energy is absorbed by the ozone layer, which causes the temperature to rise with altitude. The troposphere, which is close to the surface of the Earth, has a temperature inversion where the temperature drops with altitude.

Thus from above conclusion we can say that temperatures within the stratosphere increase with altitude because of the absorption of ultraviolet radiation.

Hence, option C is correct.

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Science teachers consider practical sciences to be a valuable component of science education for several reasons:

Hands-on Learning: Practical sciences provide students with the opportunity to engage in hands-on learning experiences. This approach allows students to actively explore and manipulate materials, conduct experiments, and make observations.

Example: In a biology class, students may conduct a dissection of a preserved specimen to study the anatomy and structure of organisms. By physically dissecting and examining the different organs and systems, students gain a tangible understanding of the subject matter.

Application of Theory: Practical sciences enable students to apply theoretical knowledge acquired in the classroom to real-world situations. By engaging in practical activities, students can bridge the gap between abstract concepts and their practical applications, fostering a more comprehensive understanding of scientific principles.

Example: In a chemistry class, students might perform experiments to understand chemical reactions and concepts like stoichiometry. By actually mixing and observing different substances, measuring quantities, and analyzing the results, students can see how theoretical concepts translate into practical applications.

Development of Scientific Skills: Practical sciences help students develop essential scientific skills, such as critical thinking, problem-solving, observation, data analysis, and communication. Through practical activities, students learn to formulate hypotheses, design experiments, collect and analyze data, draw conclusions, and communicate their findings effectively.

Example: In a physics class, students could design and conduct an experiment to investigate the relationship between force and motion. By planning the experiment, taking measurements, analyzing the data, and presenting their findings, students enhance their scientific skills and develop a deeper understanding of physics concepts.

Engagement and Motivation: Practical sciences often increase student engagement and motivation in science education. Hands-on activities provide a more interactive and dynamic learning environment, making science more interesting and accessible to students. It can spark curiosity, promote active participation, and cultivate a sense of wonder and excitement about the natural world.

Example: In an environmental science class, students may visit a local ecosystem to conduct field observations, collect samples, and analyze the data they gather. By immersing themselves in the real environment and actively participating in the scientific process, students are more likely to be motivated and engaged in their learning.

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Explanation:

The answer is No. You know light from Stars travel in cold temperature of space and different pressure as they enter our planet after travelling many light year to reach us at the same the speed.

Light bends when entering a different medium(refraction). Even if the medium is same and the temperature is different it will get bend. As the 2 different temperature air behave like 2 mediums (Due to distribution of atoms ).

But light doesn't’ bend by heating or by putting pressure on it.

Answer:

c. combination

Explanation:

Answer:

a combination of stratigraphy and radiometric dating

Explanation:

He will be less likely to contract an STI.

Option B is the correct answer.

STI stands for sexual transmitted infection.  A sexually transmitted infection (sexually transmitted disease) is a serious condition that can develop after you have sex.

So if Nasir is 12 years old, and if his caregivers talk with him openly about sexuality, he will be well informed about dangers of premature sex and sexually transmitted disease.

Thus, he will be less likely to contract an STI.

The wrong choices in the given options are;

He will soon come out as gay.

He will have sex by age 13.

He will marry by age 18.

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Answer:

A

Explanation:

well most of these are ture (Only due to school) the one answer that would apply to people outside of a school setting it A

Answer:yes

Explanation: