What type of variation is necessary for natural selection to occur

artificial variation

Environmental variation

Genetic variation

Neutral variation

Intentional conversion (by humans) of persistent upland or shallow water to wetland is termed:

What is the function of the chemiosmotic process in a mitochondrion? A) to produce food b) to produce the chemical energetic for Calvin benson cycle C) to produce oxygen D) to produce ATP E) to generate light

If the mother is type O + and the father is A - what could the offspring's blood and Rh be? (Anatomy)

If you pull a dandelion plant out of the ground, a new dandelion plant can grow from fragments of the deep taproots that may be left behind. Under which environmental conditions might this be advantageous? select all that apply. A.

Compounds that lessen the concentration of hydrogen ions when dissolved in water are

How many cell types are present in your groups set of organisms?

Which of the following is the functional unit of a myofibril? a. sarcomere b. myofilament c. sarcolemma d. endomysium

20. In certain species of summer squash, fruit color is determined by two interacting genes. A dominant allele, W, determines white color, and a recessive allele (w) allows the fruit to be colored.

When you look out the window, you can see constantly moving air. air is cycled in order to reach equilibrium. B) since these change the density of air and we know the air flows from the region of high density to the region of low density.

What effects do deforestation have on the animals?