true or false? in the fall, when leaves receive less oxygen and light, the often change color.

Which statement best summarizes what happens to energy in an ecosystem when it reaches the top of the food chain?

A food chain includes species W, X, Y, and Z. In terms of the number of individuals, species W outnumbers species X, which outnumbers species Y, which outnumbers species Z. At which trophic level in the food chain is species Y?

true or false, plants make their own food

what happens if animals do not get the food they need?

what is not controlled by plant hormones?

What happens during the Calvin cycle of photosynthesis?

what is a chemical reaction

Which vascular tissue in plants transports water and nutrients from the roots to the stems and then to the leaves?

suppose a young flowering plant has lost all of its flowers and they do not grow back. how will this most likely affect the plant's life cycle?

Animal cells cannot carry out photosynthesis because they lack ___________________.

Identify how seeds relate to reproduction.