10. Which of the following is a dissolved pollutant of water? 1. leaf litter
2. plastic
3. metal pieces
4. fertilizers

Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome