Chemicals that kill bacteria or slow their growth are called

Why are coal, natural gas and oil referred to as fossil fuels?

An oscilloscope can display 'spikes' which correspond to nerve impulses in response to a certain stimulus intensity. if the stimulus intensity is decreased, you are likely to observe spikes which are as frequent and smaller in size.

What is one way that microorganisms can be beneficial to humans? A) Microorganisms cause disease. B) Microorganisms decompose wood. C) Microorganisms decay tooth enamel. D) Microorganisms are used to produce foods.

What Occurs when oxygen in the lungs passes through the capillary wall to the blood, and carbon dioxide and water from the blood pass into the lungs A. respiratory system B. Gas exchange C. Breathing

In human polydactylism, having more than five fingers on one hand, is a dominant trait. A man who has five fingers on each hand marries a woman who is polydactyl. The couple has 8 children, only 3 of the children are polydactyl.

You can locate regions of low wind speed on a weather map by locating

Name 3 factors which can speed up diffusion and osmosis

What is a classification division

Which water system would you expect to have the lowest dissolved nutrient content?

George wants to know which flower, a carnation or a rose, is more beautiful. He surveys his classmates to gather data.