How is the radioactive decay of an element used to determine the age of a rock layer?

What is the first stage of the nuclear fuel cycle? A.) Fuel production B.) Uranium mining C.) Reprocessing D.) Disposal

Why are common names not a good reference to a species? common names can be in different languages common names vary with location common names vary with culture common names vary with species color

List and briefly describe the four "spheres" that constitute our environment.

iIn watermelons, bitter fruit (B) is dominant over sweet fruit (b), and yellow spots (S) are dominant over no spots (s). The genes for these two characteristics assort independently.

A species of rodent can either have brown fur or white fur. Brown fur is recessive and white fur is dominant.

What are restriction enzymes used for in nature?

Material with bits of rocks and once living parts of animals are

Think about a flower growing in your garden you notice that all of the leaves are falling off why is this a problem for the plant

How does polymerase chain reaction make DNA fingerprinting more reliable

A) What are the bases of mRNA coded for by this section of DNA before the mutation? Hint in RNA A pairs with U.