Populations and the Environment Answers

A rock is classified as

Hunter is studying for his ecology test. Which fact would least likely show up in his notes?

Why is a shell considered to be biotic?

What is an organism’s niche?

Elephants shape their environment in many ways. They can change a forest to a grassy field or dig a hole that might become a pond. They clear large amounts of vegetation, which removes habitats for some organisms but makes the area inviting for other organisms. Which best describes possible interactions of elephants with the surrounding ecosystem?

Which relationship is shown in the graph?

Many organisms depend on the land as a food source. Seasons can affect the amount of food that is available to these organisms. How would a long, cold winter most likely affect a population of deer?

Which describes a grizzly bear’s habitat?

Which principle states that two species in the same habitat cannot have the same niche?

Which is a biotic factor?