A group of tissues working together is an organ.
ANSWER:
A. an organ
False, it doesn’t depend on environmental factors
Answer:
Yes.
Explanation:
As a blood vessel, Superior vena cava carries completely digested substances that is present in the blood from upper part of the body to the heart. Blood is a fluid that transport digested food from small intestine to other parts of the human body. It also carries oxygen from the lungs to the cells and also carries carbondioxide from the cells to lungs so we can say that Superior vena cava carries completely digested materials.
Have very few or no predators in the new ecosystem.
Much more because you have a weather nation over the other.