Answer:
b. thrive during the summer, when sunlight increases
Explanation:
Phytoplankton production is highly associated with latitude and season. In polar regions, phytoplankton production is reduced to the summer (and eventually spring) season. In consequence, the zooplankton that eats phytoplankton only can survive during the spring and summer seasons. On the other hand, in tropical areas, there exists a nearly constant phytoplankton production all year round.
I would say D...just because of the greenhouse effect
Birds, just like humans, have a four-chambered heart.
2 and 3. Seeing as only 1 parent is producing the offspring, it’s bound to have be identical. Flowering plants can be produced asexual or sexually so it has to be 2 and 3.