What happens to the orbit of earth when the mass of the sun is reduced to 75,000? a. the orbit does not change c. the orbit gets larger b. the orbit gets smaller d. the sun begins to orbit the earth select the best answer from the choices provided

C

Explanation:

The sun's gravity keeps the earth and other nearby celestial objects in orbit. Gravity by an object is directly proportional to its mass. The higher the mass the stronger the gravitational attraction/pull on the nearby revolving planets and celestial bodies.Therefore, when the mass of the sun is reduced, its gravitational pull on the earth (and other planets) reduces making the earth's orbit longer (because it escapes a little further from the pull of the sun).

explanation:

they can be good for the ecosystem

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.