the neurobiology of opiate reinforcement suggests that opiates produce their effects by inhibiting neurons.

the primary cause of eutrophication is the input of nutrient-rich runoff into aquatic ecosystems, which fuels the excessive growth of algae and ultimately leads to oxygen depletion and other negative impacts on the ecosystem which is the first option.

Eutrophication is primarily caused by the influx of nutrient-rich runoff into aquatic ecosystems. This occurs when excessive amounts of nutrients, such as nitrogen and phosphorus, enter the water. The main sources of these nutrients are often human activities, including agriculture, urban development, and wastewater treatment. When these nutrients enter the water, they act as fertilizers, fueling the growth of algae and other aquatic plants.

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Answer:

I think it is the excretory system

Answer:

13. Bacteria

14. Golgi body

Explanation:

Answer:

Chloroplast

Explanation:

Chloroplasts are organelles found in green plants. They are the sites of photosynthesis. Chloroplasts contain chlorophyll, a photosynthetic pigment that traps light energy. This energy is used to power a series of reactions that convert water and carbon dioxide into sugars.

Explanation:

During REM sleep, your eyes move around rapidly in a range of directions, but don't send any visual information to your brain.That doesn't happen during non-REM sleep.

More information

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Secondary succession is the kind of succession that might develop in a neighborhood park after the Zombie Apocalypse if the grass wasn't cut anymore and pioneer species would first colonize the bare soil.

Thus, pioneer species like weeds and grasses would colonize the bare soil and disturbed regions in the initial stage of secondary succession. These species can swiftly adapt to a new habitat since they are frequently resilient and rapidly developing.

In secondary succession, the pioneer species are the early settlers multiply and spread, the soil conditions become more stable and draw in additional species like shrubs and tiny trees. These animals are modifying the environment in a way that makes it possible for bigger and more diversified populations of creatures to live in more complicated settings.

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Answer:

Surface Area to Volume Ratios:

Explanation:

Notice that as a cell increases in size, its surface area-to-volume ratio decreases. When there is insufficient surface area to support a cell's increasing volume, a cell will either divide or die.

Answer: As a cell grows it's volume increases more than it's surface area, this is because if a cell has too large a surface area to volume ratio, the plasma membrane is not sufficient to deal with the increased amount of cytoplasm

Answer:

The humanities include the study of ancient and modern languages, literature, philosophy, history, archaeology, anthropology, human geography, law, religion, and art.

Explanation:

Answer:

Multiple Alleles

Polygenic Inheritance

Incomplete Dominance

Answer:

An atomic nucleus is positively charged because it is composed of protons.

Explanation:

here try this my friend also hi.

Answer:

The two best courses for a student aspiring to become a hydrologist would be:

Physical Science: This course would provide a solid foundation in understanding the principles of physics and chemistry, which are essential for studying the movement and behavior of water in hydrology.

Statistics: Statistics is crucial for analyzing and interpreting data in hydrology research. Hydrologists often deal with large datasets and need statistical skills to make accurate conclusions and predictions.

While the other courses may have some relevance or value in certain aspects of hydrology, they are not as directly applicable or fundamental as physical science and statistics.

Explanation:

Answer: Statistics and Physical Science.

Explanation:

Hope this helps, and have a great day! =)

Answer:

No, flagella is found in prokaryotes such as bacteria, but are also found in some eukaryotes such as the sperm cell.

Explanation:

The type of telescope commonly used for see through dust and gas clouds with the intention of studying new stars is a radio telescope, because raido telescopes can be used to take pictures of newborn stars that are inside a giant gas cloud (when stars are born they are in clouds of gas) and the event of fusion of gases that initiate the stars formation.

The radio telescopes are made of a radio receiver and an antenna system that is used for detect radio-frequency radiation (30MHz to 300GHz) from stars, galaxies, and other extraterrestrial sources. The use of frequency analyze can determine structures that are far away from our planet, and the fact that those telescopes read radio-frequency turn easy to differentiate material sources, like the gases that are linked to the formation of stars, and others space structures.

Answer:

Replication

Explanation:

Replication is not a type of DNA mutation

Answer:

Because the equator is closer to the sun

Answer:

Regions closer to the equator are warmer because it is closer to the sun. The equator gets the suns rays directly and in a higher amount whereas the poles are colder because the sun rays are farther with less amount of sunlight.

Between the following examples, the one that is a best model to explain the process that occurs during ATP formation is:

ADP + phosphate inorganic + energy from food molecules = ATP

The parallel variation of Heliconius melpomene and Heliconius erato butterflies, as shown in Figure 1, can be discussed in terms of their pros and cons.

Pros:

1. Genetic Diversity: The presence of multiple races within each species (with parallel counterparts) indicates a high level of genetic diversity. This diversity can contribute to the adaptive potential of the species, enabling them to better respond to changes in their environment.

2. Ecological Adaptation: The parallel variation suggests that each race has adapted to specific ecological conditions. This adaptation allows the butterflies to occupy different niches within their habitat, reducing competition between races and potentially enhancing their overall survival and reproductive success.

3. Evolutionary Potential: The parallel variation observed in Heliconius melpomene and Heliconius erato provides an opportunity to study the mechanisms of speciation and evolutionary processes. By comparing the characteristics and behaviors of parallel races, researchers can gain insights into the factors driving divergence and the formation of new species.

Cons:

1. Hybridization Risk: The presence of parallel races in sympatry increases the likelihood of interbreeding between different races of the two species. Hybridization can potentially lead to genetic mixing and loss of distinct characteristics, jeopardizing the integrity of each species.

2. Increased Complexity: The parallel variation can make it challenging to identify and classify different races, as there may be overlapping traits and intermediate forms. This complexity can hinder accurate species identification and make it difficult to understand the evolutionary relationships between races.

3. Conservation Concerns: The conservation of Heliconius butterflies becomes more complex when considering the parallel variation. Each race may have unique ecological requirements, making it crucial to protect the specific habitats and resources associated with each race in order to ensure their survival.

In conclusion, the parallel variation of Heliconius melpomene and Heliconius erato butterflies presents both advantages and challenges. The genetic diversity, ecological adaptation, and evolutionary potential are positive aspects, but the risks of hybridization, increased complexity, and conservation concerns should also be taken into consideration when studying and conserving these butterfly species.

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There are two alleles in a population that influence a specific attribute. Using the letters "A" for the dominant allele and "a" for the recessive allele. A allele frequency is 0.7, whereas frequency of allele is 0.09.

The frequency of the A allele is 0.7, or 70%, since homozygous dominant (AA) genotypes account for 70% of the population. Similarly, since homozygous recessive (aa) alleles make up 9% of the population, we can infer that the frequency of the recessive allele, a, is 0.09, or 9%.

The formula 2pq = frequency of heterozygotes, where p is the frequency of the A allele and q is the frequency of the an allele, can be used to determine the frequency of the heterozygous genotype (Aa).

We know that the frequency of heterozygotes is 0.21, or 21%.

Plugging in the known values:

2 * 0.7 * q = 0.21

Solving for q:

q = 0.15

So, the frequency of the A allele is 0.7, and the frequency of the a allele is 0.09.

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Answer:

Think about it. Worms move with MUSCLES. So the first answer is None.

The appendage of a roundworm is not present.

How do you think worms turn and move? They are segmented. The symmetry  of a worm is Bilateral.

Explanation:

I'm doing the assignment myself. Look up the answers and use common logic.

Answer: GGTTAACT

Explanation:

Answer:

C, Vas deferens, urethra.

Explanation:

After leaving the epididymis, sperm cells pass through the vas deferens on the way to the urethra.

Skeletal muscles are responsible for voluntary contractions. (1) Deltoid (2) Pectoralis major (3) Serratus anterior (4) Latissimus dorsi  (5) Trapezius

The followings are skeletal muscles responsible for the voluntary contraction of different bone structures.

Deltoid (1)

- Origen ⇒ Three origen point ⇒  the clavicle, acromion, and scapula.                                                              

- Function ⇒ This muscle is involved in the shoulder movement.

Rhomboideus

- Origen ⇒ Scapular vertebral edge

- Function ⇒ Scapula abductor, rotator and elevator.

Serratus anterior (3)

- Origen ⇒ Internal scapular vertebral edge

- Function ⇒ Scapula separation, rotation

Pectoralis major (2)

- Origen ⇒ Anterior face of the clavicle, sternocostal articulations, and costal cartilage.

- Function ⇒ depends on the region

Trapezius (5)

- Origen ⇒ cervical and dorsal vertebrae

- Insertion ⇒ the clavicle, acromion, and scapula

- Function ⇒ scapula elevation, adduction, and rotation. Clavicle traction.

Latissimus dorsi (4)

- Origen ⇒ from the seventh dorsal vertebra to the sacrum dorsal crest.

- Insertion ⇒ In the humerus

- Function ⇒ Involved in the arm movement. Abduction, extension, and rotation.

The labels in the picture are,

(1) Deltoid

(2) Pectoralis major

(3) Serratus anterior

(4) Latissimus dorsi

(5) Trapezius

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Answer:

Introducing a new organism into an ecosystem can have significant impacts on the stability of that system. This is because every species in an ecosystem is interconnected and plays a vital role in maintaining the balance of the ecosystem. Introducing a new species can disrupt this balance and lead to both direct and indirect effects.

One direct effect of introducing a new organism can be competition for resources. For example, the introduction of the cane toad to Australia led to a decrease in the population of native insect-eating animals, as the toads outcompeted them for food.

Another direct effect of introducing a new organism can be predation. The introduction of the brown tree snake to Guam led to the extinction of several bird species, as the snake had no natural predators and was able to prey on the birds.

Indirect effects of introducing a new organism can include changes in the availability of resources. For example, the introduction of the zebra mussel to the Great Lakes in North America led to a decrease in the abundance of plankton, as the mussels filtered them out of the water.

The introduction of a new organism can also lead to the spread of diseases. For example, the introduction of the Asian tiger mosquito to the United States led to the spread of dengue fever and chikungunya virus.

Finally, the introduction of a new organism can also affect the relationships between existing species. For example, the introduction of the invasive plant Kudzu to the southeastern United States led to changes in the abundance and distribution of native plant species, which in turn affected the populations of native animals that relied on these plants for food and shelter.

In conclusion, introducing a new organism into an ecosystem can have far-reaching effects on the stability of that system. It is important to carefully consider the potential impacts before introducing a new species to an ecosystem.

Explanation:

I know you said 5 sentences, but nerded out LOL

Answer:

Wethering

Explanation:

Because when it rains, the water gets into the rock day by day. And then it breaks down and gets washed away.