Nida draws a diagram with insects, birds, and mice. she shows the mice eating grass; hawks, snakes, and toads eating the insects; and foxes, hawks, and snakes eating the birds and mice. the snakes are also eating the toads. which best describes the diagram?

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Food Chains/webs And Trophic Levels

Introduction to Food Chains, Webs, and Trophic Levels

Food chains, food webs, and trophic levels are all used to describe feeding relationships and energy transfer.
Food chains show one line of feeding relationships, while webs show the connection of food chains in an ecosystem.



Food Chains

Food chains show one pathway of how energy is passed through an ecosystem based on feeding relationships.
Trophic levels show the position an organism occupies. Primary producers are always the first trophic level because they support the chain.

Food Webs

Food webs are complete versions of food chains. They show multiple feeding relationships.
Organisms can be at different trophic levels in food webs. Seals are secondary consumers when they eat fish, but tertiary when they eat penguins.

Population Fluctuations in Food Webs

Every trophic level is dependent on the level below it. If the primary producer population decreases, all consumer populations will as well. If a primary consumer population decreases, then secondary consumers will decrease as well.

The answer is food web i just did the quiz;)

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11