Because organisms at different tropic levels get their energy from the organisms at the lower tropic levels.
Answer:
b
Explanation:
The pulmonary circulation is a division of the circulatory system in all vertebrates. The circuit begins with deoxygenated blood returned from the body to the right atrium of the heart where it is pumped out from the right ventricle to the lungs.
A. The oceans.
That is because oceans absorb more than a quarter of the carbon dioxide that humans produce.
Hope that helped.
Answer:
Could be many things such as Autism, ADHD, Epilepsy, Arthritis, Diabetes etc
Explanation:
Answer:
aerosol can affect your both of your lungs and heart
it can cause irritation on the airway Making it hard to breath.