This is for an ecosystem project and the ecosystem is the forest, what r 5 producers?

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

Why do we perceive objects as retaining their brightness under different lighting levels?

Which characteristics are typical of a human population in the postindustrial stage?