Chicken pox is usually only contracted once because:

A. It is not very contagious.

B. Antibodies remain in the body.

C. Antigens prevent the virus from attacking again.

D./None of the above.

HURRY! What are the two causes of density in deep current waters? a. Salinity (how much salt) of the water and high temperatures b. Salinity (how much salt) of the water and low temperatures c. Oxygen content of the water and high temperatures. d.

How are dominant alleles often represented

In order for precipitation to take place which process in the water cycle must take place first

How does intestinal failure affect the body

What are the products of step 1 of the hydrogen fusion process in the Sun? Check that apply

Produces gametes used in sexual reproduction

By definition for osmosis to occur the membrane separating two compartments

I have trouble unlocking the answers

If you follow the longest food chain in the food web below from grass to owl, how many trophic levels are there? grass aspen grasshopper rabbit-fox frog #snake owl o A. Three B. Five C. Four D. Two

What's the meaning of diagnoses