How does La Niña affect the climate of the Pacific Ocean?

It cools the water to below its normal temperature.
It increases hurricane activity.
It warms the water to above its normal temperature.
It moves warm water toward the east.

What is the name of the two satelites on mars

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.

Which of the following is a true statements about viruses? viruses have no nucleus. viruses are alive. viruses have a cell membrane. all viruses are deadly.