What does phosphate do to plants

Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer

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