2. why did cyanobacteria gain an advantage over their chemosynthetic com
a. chemosynthetic bacteria are too large and unable to diffuse organic com
their membranes.
e too large and unable to diffuse organic compounds across
b. cyanobacteria rely on ammonia and methane for photosynthesis.
c. chemosynthetic bacteria require oxygen for survival.
d. cyanobacteria are able to produce glucose, using abundant and easily obtained
materials.

The large ground finch obtains food by cracking seeds. what is its short, strong beak an example? a) tendency toward perfection b) adaptation of a species over time c) selective use and disuse of an organ over time d) scarcity of recourses

In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .

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.