Which best describes cosmic microwave background radiation?

radiation thought to exist but not yet measured

radiation predicted to exist in millions of years

radiation that existed before the big bang

leftover radiation from the big bang

Organic molecules that animals require in small amounts for normal cell function, growth and development are: Select one: a. Minerals b. Probiotics c. Vitamins d. Antibiotics

Instead of the traditional route of upward mobility as a way to achieve assimilation

Which one has a cell membrane prokaryotic or eukaryotic cells?

Resource partitioning results in: a move from the realized niche to the fundamental niche for both species. individuals of each species hybridizing in the region of overlap. a move from the fundamental niche to the realized niche for both species.

How is Cartilage tissue structured to act as a "cushioning shock absorber"?

Chemicals that kill bacteria or slow their growth are called

As you reach for a rose, you unexpectedly feel the painful poke of a thorn. you quickly withdraw your hand. which part of this process is accomplished mainly by the central nervous system?

Which of the following steps is an important part of the process by which ecology guides human to a sustainable future?

Estuaries are very productive ecosystems because they receive nutrients from rivers and oceans. a. True b. False

What is found about 10 km above earths surface