Proteins from outside a cell that stimulate it to divide are called A. oncogenes. B. stem cells. C. cyclins. D. growth factors

A plateau is made of sandstone of varying densities. How is the plateau likely to change over time? Smooth columns would form due to deposition at the same rate. Smooth columns would form due to erosion at the same rate.

What is one of the top 5 causes of accidents in the u. s?

Asexual reproduction takes less energy to perform than sexual reproduction. why is this most likely the case? a. specialized gamete cells do not need to be produced during asexual reproduction. b.

How and why do planets rotate around the sun? What would happen if planets wouldn't rotate but orbit the sun?

1. Handles of cooking vessels are made up of plastic. 2. Over cooking of food is an unhealthy kitchen practice. 3. Thermometers and electric bulbs are made of glass.

What are two molecules that carry energy in a biochemical pathway

Which of the following causes a tumor to form

Why might a water table drop

How did the 1898 discovery of blood types affect society?

Which of the following is a feeding source for fens? aquifers dexfoliants exfoliants nitrates