Scientists have discovered that the inner core of Earth is a solid while the outer core is a liquid. What is the cause of this observation?

Why are stem cells important? A) They are incapable of becoming cancer cells. B) They have specialized DNA. C) They have the potential to develop into other cell types. D) They have the potential to undergo cell division.

The iodine test is positive for simple sugars if the substance turns bluish purple

Why might a rancher plant several varieties of grass fro grazing on the same ranch

How far is the earth from the sun?

Why might a scientist repeat an experiment if he/she didn't make a mistake in the first one? An experiment should be repeated to A) increase income for increased work. B) prove how good of a scientist you are. C) double check your results.

Arteriole blood pressure increases in response to all but which of the following? A. increasing stroke volume B. falling blood volume C. rising blood volume D. increasing heart rate E. all of these

Small islands can form during the constructive process called A) erosion. B) glaciation. C) deposition. D) weathering.

Elliptical galaxies are egg shaped galaxies without spiral arms or interstellar gas and dust. True or false

How would homeostasis be affected if the endocrine system did not release the proper amount of hormones?

A mass located in the cytoplasm of a cell, separated from the cytoplasm by a nuclear membrane; considered the control center of the cell. A. mitochondria B. nucleolus C. pinocytic vesicle D. nucleus