How does a primary consumer differ from other consumers?

Humans are considered omnivores because

An exotic insect is introduced to a forest ecosystem. It is resistant to the toxins the trees produce to protect them from being eaten by insects. How would this most likely affect the forest ecosystem?

Tiger sharks could be considered a keystone species because they

Why are omnivores classified as secondary consumers?

Which type of aquatic environment covers 75 percent of Earth's surface?

Barnacles are often found attached to a whale's skin, causing no harm to the whale. If the barnacle and whale are commensalists, which of these best describes the barnacle?

What type of ecosystem would be most directly affected by a natural disaster that changed the amount of salt in the ecosystem?

An animal that eats only plants is a(n)

What species interaction involves one organism serving as a host to the other organism?

Salmon are born in freshwater, migrate to the ocean, and eventually return to freshwater to mate and die. What characteristic allows the salmon to survive this lifestyle?

What is true about parastic relationships?

If two species in an ecosystem both feed on leaf beetles, then these two species are

How does a predator differ from a parasite?

Which of the following is an example of commensalism?

If the primary consumers in a food chain become extinct, what will most likely happen?

What type of organism is at the basis of all food chains?

What is detritus?

In parts of Africa, gazelles and lions are part of the same community. Gazelles are a food source for lions. How would an increase in lion birth rate most likely affect the gazelles?

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