What only happens during a chemical reaction?

a. Bubbles form.

b. A solution is made.

c. New substances are formed.

d. Colors change.

What is the advantage of genetic recombination as a mode of reproduction in bacteria

Which of the following statements about stars is true? A. Stars vary greatly in temperature. B. none of these C. Stars rarely differ in temperature. D. All stars are the same temperature.

A major objects of the South Pacific forum founded in 1971 was

Blood that leaves the heart for the body passes through a large blood vessel called the ___.

A client reports muscle cramps in the calves and feeling "tired a lot." the client is taking ethacrynic acid (edecrin) for hypotension. based on these symptoms, the client will be evaluated for which electrolyte imbalance

One trait a plant can have is either red leaves (R) or brown leaves (r). Another trait is tall stems (T) or short stems (t). A plant used in a dihybrid cross has the genotype RrTt. What is the phenotype of this plant?

jill has a beaker. in this beaker there are two layers. the top layer is transparent with yellow tint to it, and the bottom layer is transparent and clear. jill decides that the bottom layer is probably water.

If a bug has 100 energy, how much energy would you expect a bird to get from it? (10% rule)

Which substance is an inorganic molecule?

a population of domesticated sheep becomes stranded on a rocky island. over many years, the physical traits of the sheep population are altered.