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.
Kelp --> sea urchins ---> sea otters best represents the feeding relationships in a kelp ecosystem that has not been disturbed
by humans.
The answer is Deoxyribose
Aerobic respiration to lactic acid fermentation, lactic acid is the reason your muscles get sore after a workout
Hope this helps.
