Plants use photosynthesis to turn sunlight, air, water, and nutrients into food energy is it true or false

What is thought to have caused the mass extinction at the end of the cretaceous period?

What happens when the cell copies its chromosomes

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