In the process of photosynthesis and aerobic respiration why the amount of oxygen and carbon dioxide remains the same?

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

Cedric has a low fever and minor aches. yesterday, he went to the doctor for his booster shot and receive the flu shot. which best explains why he has this reaction?

In a cladogram, what occurs at a node? a derived trait appears. evolution is stopped. an ancestor dies. the cladogram ends. aa as s as ss what are the chances that their offspring will have sickle cell anemia? 0% 25% 50% 100%