Molten material cools and forms igneous rocks. Lava flows from a volcano.

The majority of mass in living things come from 6 elements. From the options below select 4 elements that are most commonly found in a living things. A.) Sodium B.) Sulfur C.) Nitrogen D.) Chlorine E.) Potassium

The digastric muscle's job

A tube called the what extends from the bladder to the outside of the body

Which of the following is true about acid rain? a. It is more acidic that normal rain. b. It is less acidic than normal rain. c. All rain is acid rain. d. There is no such thing as acid rain.

which statement is true about the relationship between the substrate and the active site of an enzyme

How did Francesco Redi disprove the idea of spontaneous generation? He showed that flies were not produced by meat. He showed that microorganisms are present in air. He showed that microorganisms cause disease. He showed that flies spread disease.

Of the millions of sperm who start the long journey to the egg, how many sperm are actually allowed to enter the egg?

A mineral leaves a gray trail when scraped against an unglazed porcelain plate. Which property of a mineral is being measured? A. luster B. streak C. color D. hardness

Which two systems in the human body are devoted exclusively to the regulation of organ function?

A 40-year-old man reports to his health care provider complaining of "heartburn" that occurs after eating and also wakens him at night.