Herbivores obtain most of their energy by

Needed fast 15 points the process of natural selection favors certain characteristics in organisms, while it selects against other characteristics. what would happen if there was zero variation between all of the organisms on earth? a.organisms would evolve to increase variety b.natural selection would operate faster c.less food would be available d.evolution through natural selection would not occur

Suggest two reasons why irrigation is important for human development of the desert (4 marks)

What are the similarities and differences in the way geologists and biologists approximate the age of the earth? justify your response in two or more complete sentences.