Which macromolecule makes up the majority of the cell membrane? a.) nucleotide b.) lipid c.) protein d.) carbohydrate

The united states produces an average of 429 billion pounds of food annually. about 133 billion pounds of that food ends up as waste.the percentage of food that the united states wastes each year is %.

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

Approximately what wavelength of light is best absorbed by chlorophyll a