Why do plants produce more carbon dioxide than oxygen during the night?
o
a. respiration can happen without sunlight, but photosynthesis
cannot.
b. respiration can only occur when there is no available sunlight.
o
o
c. photosynthesis only produces carbon dioxide during the night.
o
d. respiration produces oxygen during the day and carbon dioxide at
night.

The image shows the evolution of a species of fish. a few fish from a population developed different social behaviors and evolved into different species. two fish according to the image, the fish underwent . the new species of fish had mating seasons that were different from that of the original fish. because of the differences in mating seasons, the fish underwent reproductive isolation. this mode of isolation would be .

10. which person would be the least effective host for a pathogen? an older person a young athlete a smoker a sick person

Imagine that you are a doctor in a maternity ward. during your last shift, 20 babies were born. 10 had blue eyes, and 10 had brown eyes. 15 had round heads, and 5 had pointed heads. what are the parents phenotypes/traits?