The ozone layer serves and protects us from harmful uv radiation that comes from the.
a. point-source pollutant
b. thermal pollutant
c. sunscreen
d. blanket

Fan egg cell containing the (n+1) number of chromosomes combines with a sperm cell containing the (n) number of chromosomes, what is the result of this union? a) all future somatic cells of the organism will contain the (2n + 1) number of chromosomes. b) all future somatic cells of the organism will contain the (2n - 1) number of chromosomes. c) only certain somatic cells of the organism will contain the (2n + 1) number of chromosomes. d) all future somatic cells of the organism will contain the normal diploid number of chromosomes.

When a person is exercising the body needs to deliver increased amounts of oxygen to the muscles which component of blood ensures that the muscles will receive it

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone