The ability of a muscle to contract and relax is dependent on the flow of what substance in and out of the muscle cell?

Which level of organization is seen in both arachnoidiscus ehrenbergi and the human stomach?

Give two other factors that may affect a person's metabolic rate

Doppler radar shows a vertical rotating column of air which high wind speeds. Which is most likely occurring?

Which of the following is a result of earth's current radiation balance? A. earths inorganic and organic forms of matter are in equilibrium B. earth is warm enough to support life C. earth is a completely closed system D.

Which best describes the role of a negative feedback loop? The output is reduced so the body can maintain homeostasis The output builds so the body can maintain homeostasis Hormone levels In the blood increase to increase effects Hormone levels In

In what way are slime molds similar to kelp?

What does not exist in a supersaturated solution

When dust and ash particles from a volcanic eruption block out sunlight and reduce solar radiation, earth experiences the. This results in temporary climate cooling

Which of Jupiter's moons is volcanically active? Io Ganymede Europa Callisto

Risk assessment depends on