Choose all the answers that apply.

The earth's atmosphere:

A-is made mostly of oxygen
B-helps recycle water
C-protects the earth from harmful radiation
D-reduces the temperature extremes between day and night
C-recycles carbon dioxide and oxygen

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

How have high taxes on tobacco products impacted the number of people who use them? a. the number of tobacco users has increased. b. the number of tobacco users has decreased. c. the number of tobacco users has not changed. d. the number of adolescent tobacco users decreased, while the number of adult users increased

Aparent with freckles is crossed with a parent without freckles. the punnett square shows the possible genotypes and phenotypes of the offspring. which statement accurately describes the probability of phenotypes? a.the offspring are more likely to have freckles. b.the offspring are more likely to have no freckles. c.the likelihood of the offspring having freckles and not having freckles is the same. d.the likelihood of the offspring having freckles and not having freckles cannot be determined.