Cycles of Matter Answers

Which describes a grizzly bear’s habitat?

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?

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

Which best describes a bird’s role as it eats seeds?

A rock is classified as

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?

Why is a shell considered to be biotic?

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?

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

Which is a biotic factor?

A rock is classified as

What is an organism’s niche?

Which describes the habitat of a frog?

The Phoenix area of the Southwestern desert typically receives 8 inches of precipitation yearly, in two seasonal patterns. Even though it is an arid region, it has high biological diversity. Thin-leaf trees abound, such as palo verde and desert ironwoods. Wide varieties of cactus thrive, including the cholla, prickly pear, and saguaro. Wildlife includes insects, reptiles, many bird species, small rodents, and other mammals. Which factor in the Southwestern desert ecosystem is abiotic?

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

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

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 relationship is shown in the graph?

What is an organism’s niche?