What is the function of the air sacs in the respiratory system of birds? ?

Most of the carbon on earth is stored in the form of

This is a situation in which genes are attached to an organism's sex chromosomes; the sex of an organism influences the expression of a gene.

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