Sample b is the control group because it’s the group not being tested and being kept the same.
The decline in the overall population of trout and larger fish is because the Insect population has decreased.
<h3>What is a population?</h3>
A population is a group of organisms of the same species living in the same habitat.
Population of organisms is affected by;
- availability of water
- space
- food and nutrients
- predators
- climate change
Since the population of trout is directly affected by the number of insect species, the decline in the overall population is because the Insect population has decreased.
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With regards to gender differences in coping strategies, male is to female as fight or flight is to TEND AND BEFRIEND. Men and women have different strategies in coping with stress; men usually exhibit the fight or flight tendency while women exhibit the tend and befriend tendency.
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The ventricles of the heart have thicker muscular walls than the atria. This is because blood is pumped out of the heart at greater pressure from these chambers compared to the atria.
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Researchers also found that the longer a male's tail feathers, the faster he was able to shake them. This effort would require more muscular strength, and might be a powerful signal of fitness to the females.
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