Which trophic level contains the organisms that are the source of all chemical energy used in an ecosystem? parasites

herbivores
producers
decomposers

Which blood cell spend most of their time in the lymphatic system?

Rachel ate a piece of fruit and happened to drop the seeds in her backyard. after a few weeks, she saw a small plant with flowers growing in the backyard. which group does this plant belong to? a. angiosperms b. gymnosperms c. pteridophytes d. bryophytes e. chytrids

Which locations on the map are low-pressure areas? a b c d e