The purpose of this exercise is to demonstrate the comparative effect of uv on two (or three) bacterial populations. this could have been accomplished without the cardboard cover. why was the cover used?

Who is the most smartest scientist in the world?

A client with aids has become forgetful with a limited attention span, decreased ability to concentrate, and delusional thinking. what condition is represented by these symptoms?

Compared to small cells, large cells have more trouble doing what?

Which describes the habitat of a frog?

Which statement best describes the relationship between a dependent variable and an independent variable in a scientific investigation A) The independent variable changes in response to changes in the dependent variable B) The dependent variable

In this biome you will find many evergreens tree. They don't lose their leaves and they are triangle shaped so their branches won't hold snow and break. This biome is found in Canada and Russia what biome is this?

The drought alone did not cause the dust bowl. It was combination of several things, the drought and

Ecology is made up of

Why does a temperature inversion trap smog and prevent it from dispersing

Turgor pressure is the result of: A) the activity of the contractile vacuole. B) water accumulation within a cell. C) the rigidity of the plasma membrane. D) All of these choices are correct.