Suppose a scientist wants to begin an investigation on water pollution. what resources should the scientist use to research water pollution? what are some examples of reliable resources?

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

The arrows indicate the direction of wind flow. which place experiences monsoons?

Nephrons, the functional unit of kidneys, are responsible for formation of urine. the sentences describe situations that are the result of problems in the urine formation process. for the nephron shown below, match each situation to the step in the urine formation process where the problem lies.