Some organisms living in a vacant lot include grass, dandelions, mice, grasshoppers, and slugs. Collectively these organisms represent

(A) an ecosystem.

(B) a community.

(C) a population.

(D) a mutualism.

(E) a biome

Explain how amino acids form proteins

The grants data showed that natural selection takes place A) rarely B) never C) slowly D) frequently, and sometimes rapidly

What allows substances to pass back and forth between the placenta and the embryo?

The units of structure that build proteins and are linked together end to end are:

Addison's disease is due to a insufficient output of glucocorticoids only. addison's disease is due to a insufficient output of glucocorticoids only. a. True b. False

How is ruminants stomach different from human stomach?

Cross-cultural research on human development indicates that

Use the drop-down menus to identify the scientists who match the descriptions below.

Which best describes a tendon? a flexible tissue that acts as a shock absorber between bones a somewhat elastic tissue that connects bone to either bone or cartilage a flexible and compressible tissue that provides joint stability a tough and

What are the five organ system to digest a hamburger in your body?