Vernon is studying the population of deer in a tract of forest. He gathers the
following data.
Birthrate: ~50 deer/year
Death rate: ~70 deer/year
Which additional observation would support the conclusion that the deer
population is NOT changing size from year to year, meaning that the net
population change is 0?
a. About 20 deer per year immigrate to the tract of forest.
b. About 20 deer per year emigrate from the tract of forest.
C. The average life span of a member of the deer population is 20 years.
d. If a deer survives its first year of life, its average life span is 20 years.

sadness is not good

explanation:

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.

1. is geographic distribution

2 is increasing complexity

3 is transitional forms