1. Which of these statements describes a niche?
- an environmental factor that tends to limit population size

- an increase in the Earth's average atmospheric temperature that causes corresponding changes in
climate, which may result from the greenhouse effect

- the unique living arrangement of an organism defined by its habitat, food sources, time of day it is
most active, and other factors

- none of the above

chicken soup is a bit of a woman in elizabethan

a. seed plant structure. 1. the three main plant organs are roots, stems, and leaves. a fourth kind of tissue, meristematic tissue, is responsible for plant growth. meristematic tissue is the only plant tissue that produces new cells by mitosis. plants can lose water out of their leaves as they exchange gases with the air

explanation:

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: