which of the following statements is true?

a. a producer must be a plant.

b. humans that prepare their own means are producers.

c. a producer usually obtains food by hunting other organisms.

d. consumers depend upon producers for food.

Differences between compact bone and cartilage

The ancestors of plants that lived in water had plenty of water for the young. angiosperms are a group of land plants that evolved a reproductive trait for living on land. this trait protect young plants by allowing them to grow only when water is present and the conditions for healthy development are right. what trait most likely young angiosperms in this way?

Use the distance formula to determine weather each pair of segments have the same length