I make 2.5kg of popcorn and eat 750g of it while watching a movie. How much popcorn is left?

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 organ controls breathing? lungs alveoli heart diaphragm

Which level of taxonomy has the fewest organisms?