Natural selection chooses which variations become prevalent in a population through environmental pressures. Which of these is an environmental pressure which can lead to natural selection?

During which of the following processes would carbon most likely be stored? Burning of coal Formation of fossil fuels Respiration Volcanic eruption

What is the fluid filled sac that protects the baby until birth?

Why is glucose not a direct source of cellular energy?

What does monomer need in its structure to undergo addition polymerisation

The areas nearest the equator are warmer because the sun's radiant energy shines directly on those areas. True or False

Why are there so few aquatic plants and phytoplankton that live at the bottom zones in the ocean? a. the ocean floor contains many de composers b. most sunlight is absorbed before reaching these levels c. water is limiting factor d.

Which of the following is not a property of a base? Feels slippery to the touch Changes red litmus to blue Has a sour taste Produces OH - ions

Two cats are mated. one of the parents cats is long haired (recessive allele). The litter which results contains two short haired amd three lomg haired kittens. What does the secon parent look like, and what is its genotype?

The blood in the lungs contains less oxygen and more carbon dioxide than the air. explain why oxygen moves from the air to the blood and carbon dioxide from the blood to the air

What do all plant life cycles have in common?