How did early man explain observed events in nature?

The irispupilscleracornea is the opening which allows light to enter the eye.

A woman with type o blood is expecting a child. her husband is type a. both the woman's father and her husband's father had type b blood. what is the probability that the child will have type o blood?

What beryllium and magnesium and calcium have in common

An open wound in which tissue is separated from the body

Can human do sex with animals or animals do sex with human? State your answer.

What do amoeba proteus, dinoflagellate, and euglena viridis have in common? a. they all can move and make their own food b. they all can move and use eye spot to locate food c. they all can move and be heterotrophic d.

How is a scientific hypothesis best evaluated?

The overall population of a species decreased. What could have occurred to make this happen? The immigration rate increased, while the death rate decreased. The birth rate decreased, while the death rate increased.

Which of the following terrestrial biomes cannot be found in the United States? A: temperature deciduous forest B: tundra C: desert D: grassland/prairie

Which of these food sources does the bald eagle not feed on? plants fish carrion mammals