B. Animalia and Plantae, or animals and plants, are multicellular organisms.
Population decrease and extinction
I think the answer is A. not entirely sure
Answer:
with each heartbeat,the heart pumps blood throughout our bodies,carrying oxygen to every cell,after delivering oxygen the blood returns to the heart the heart then sends the blood to the lungs to pick up more oxygen.
I think the answer is b
so yeah that'll be B' option
hope its help
