Aprokaryote is most likely to use which of the following modes of metabolism to release energy. if it is in an environment without oxygen, dies when exposed to oxygen, and use fermentation

oxidation

explanation:

answer

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.

a bird that nests only in a particular tree species.