Which organisms are the best example of producers in a food web?

killer whales

krill

marine phytoplankton

zooplankton

Compare the composition of the moon's surface with the composition of the earth's surface.

Match the reproductive structures based on their function and the system to which they belong. egg ovary sperm vas deferens vagina fallopian tube testis urethra

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?