7. evolution is which of the following?
a. a set of assumptions about the earths atmosphere
b. a scientific theory that has been largely disproven
c. a way of explaining of how organisms develop
d. an explanation of how organisms develop and diversify

8.why do marine scientists often take more than one representative sample?
a. populations can vary even within the same region.
b. there are often mistakes in representative samples
c. there is a long tradition of taking several samples when documenting population
d. marine scientists lack the technology to determine the population at the oceans depth.

Evolution is an explanation of how organisms develop and diversify.

Explanation:

In the process of evolution theory of natural selection is the most important concept to know. The theory of natural selection states that individual who adapted to the environment, survival of the fittest. As a result of interactions between organisms and the environment diversity in population occurs. Due to mutation and genetic combination, different characteristics in the organism appear and diversity happens.

i believe the correct answer is d

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.