Populations and the Environment Answers

Which relationship is shown in the graph?

Why is a shell considered to be biotic?

A rock is classified as

Which is a biotic factor?

Which describes the habitat of a frog?

Which is biotic?

What is an organism’s niche?

A biologist counts the number of rabbits in a population each year and observes a decrease in population. Since the coyote population has exploded, the biologist concludes that the coyote population has had a negative impact on the rabbit population. Which describes the biologist’s actions?

Interactions between organisms and their environment impact the organism’s overall population. Zebra mussels are not native North America; they were brought here by ships travelling from Europe. They reproduce quickly and filter out plankton from the water reducing food for native fish. Native fish populations have started to decline. Which concept shows the relationship between zebra mussels and native fish?

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?