Aquatic biomes are classified by the type of water that each of them contains. some of them are freshwater environments if they contain less than 1% salt and others are marine environments if they contain a large amount of salt. some are salt and freshwater combined. they are called brackish water environments.

match the following aquatic regions to the type of water found in each. some water types are associated with more than one aquatic region.

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

the answers are as following:

1. c. double helix, nucleosome, coil, supercoil, chromosome

2. b. g2 phase, preparation for mitosis

3. d. interphase consists of the g1, s, and g2 phases

4. c. metaphase

5. a. chromosomes are duplicated before cell division so that each new daughter cell has a complete set