What can be used as both a moderator and a coolant in nuclear power plants?

Neutrons
Graphite
Ceramic pellets
Water

Surrounded by microtubules, located near the nucleus. (don't try to google it) (give answer only if u know)

Recommend a strategy for incorporating sustainable human activity into a tropical rain forest biome.

During a fierce storm a large number of tall trees on an island are uprooted by the wind and die. most of the trees on the island are now short trees and produce seeds that grow into short trees. what concept is shown in this example? question 5 options: natural selection artificial selection genetic engineering gene splicing