What is the name for millions of stars held together by gravity A. Supernova. B. Constellation. C. Solar system. D. Galaxy.

The thoracic cavity is separated from the abdominal cavity by the

How does the nervous system and immune system work together

What are 2 thins cimate change can do if it continues?

Check all that commonly occur in the skin during aging. Collagen fibers in the dermis decrease in number Sweat gland activity increases Reduced activity of skin stem cells Melanocyte numbers increas

Waves that must travel through a medium are A. latitudinal waves. B. mechanical waves. C. electromagnetic waves.

Why might a baby be born early if the mother smokes?

It is crucial that the process or mitosis is error free. this is because otherwise healthy cells can

How does blood move through the body?

The sinuses are a defect in bone growth and have no real purpose. a. True b. False

How can growth of a population be slowed by its own numbers?