Which is considered an abiotic factor in a marine ecosystem? biodiversity plankton salinity symbiosis

Correct C). Salinity

The abiotic factor is those factor that is associated with non-living such as chemical or physical parts of the environment. They are considered as the part of the environment that are known to affect the functioning of the environment and the living organism that is living in the environment.

Here, all the other components are biotic factors, only salinity is the abiotic factor.

Hence, the correct answer would be option C.

the major parts of the digestive system:

salivary glands.

pharynx.

esophagus.

stomach.

small intestine.

large intestine.

rectum.

accessory digestive organs: liver, gallbladder, pancreas.

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.