a sample of wood that originally contain 10 g of carbon-14 Now contains only 50 g of carbon 14 approximately how many years ago was the sample apart of living tree

The components of the human body. from organ systems to cell organelles, interact to maintain a balanced intemal environment.

What if DNA was parellel?

What structure modifies proteins and packages them for distribution from the cell

List three examples of how people are exposed to pollutants on a daily basis.

What is difference between an inherited trait and a trait that is shaped by the environment?

Adenine pairs with what

Trees take carbon dioxide out of the air and convert it to oxygen, so the government funds a tree-planting initiative by offering $300 to any citizen who plants a tree.

How many cells does a unicelullar living organism have

When does a wheel and axle have a mechanical advantage greater than one?

What do cells need to do between divisions to make sure that a full set of dna gets passed on to each daughter cell?