Defecation

a. is initiated by distension of the wall of the colon.

b. depends on voluntary control of the external sphincter of the anus.

c. depends on the motor impulses from sympathetic pathways.

d. decreases pressure in the rectum.

Why is oil referred to as a fossil fuel? A. Oil was formed from decaying layers of plants in swamps millions of years ago. They fossilized into oil. B.

A population of snakes has 900 individuals. They have a death rate of 30 per year and a birth rate of 20 per year.

Epiphytic and parasitic plants grow on which of the following? Humans or rocks or dogs or plants

1. In an ecosystem, there are many factors that affect how many organisms can survive there. Which of the following is one of those factors? A. availability of water B. number of times humans have seen the area C. color of flowering plants D.

When switching up to high power, you would use all of the following except A. the diaphragm B. the fine adjustment knob C. the coarse adjustment knob D. stage controls

When a protein is denatured, why does it lose its functionality?

This is a rotating machine that converts the kinetic energy of the wind into mechanical energy. If the mechanical energy is used directly by machinery, such as a grinding stone, the machine is usually called a windmill.

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