How is an amoeba an example of an organism? (Hint: think of the characteristics all living things have in common)

In the process of genetic engineering, the mixing of genes may occur between

What type of tropical forest has been most severely altered by human activities?

What does a cell do to make sure that it does not grow to big?

What must humans do to protect the biodiversity of earth

The heart of amphibians and many reptiles contains a single ventricle, while the mammalian heart consists of two separate ventricles that work side by side. What advantage does the mammalian heart provide? A.

Which best explains how the body maintains homeostais? A. All systems work together to match the external environment B. All systems work together to stabilize the body C. Each system works interdependently to stabilize the body D.

It is an effect that drug use can have on society? A. Drug use increases pollution. B. Drug use leads to an increase in criminal activity. C. Drug use increases the spread of disease. D. All of the above

Which of the following affects the speed of light waves in a material? Angle at which the ray strikes the medium Color of the material Density of the material Temperature of the light wave

What does the nosepiece do on a microscope

What does a scale measure