How do groups of organs assemble and work together to make an organism?

A. they form other organs

B. they form group of cells

C. They form organ systems

D. They form an ecosystem

An individual who has been on a diet that eliminates dairy products complains of muscular spasms and nervousness. Specifically, why might these symptoms result from such a low-calcium diet?

List three changes of state during which energy is absorbed.

Rock is broken down into soil by what process? a) mechanics b) accumulation c) weathering

How many electrons can be held in the entire third energy level? A. 8 B. 9 C. 18 D. 32

A frog jumps into a pond and its skin absorbs water. What spheres had the water moved through?

Nitrogen in organic fertilizers is released slowly into the soil because the organic material has to be ...

Which is the only mechanism that can introduce new alleles in a gene pool? A. Genetic drift. B. random mating. C. mutation

Ln mammalian cells, the synthesis of fatty acids is catalyzed by a multifunctional protein named: a) Acetyl CoA Carboxylase b) Carnitine acyltransferase c) Fatty acid synthase d) B-ketoacyl synthetase e) Acyl carrier protein

How does the energy available to organisms change within each feeding level of the pyramid? A. There is more energy available in the middle levels than in either the top or bottom level. B.

What types of environment do arthropods live in