Answer:
a.
Explanation:
Engery is the driving force of the oxygen cycle is photosynthesis itself, which is responsible for the creation and maintenance of earth's atmosphere.
Asexual:
One parent
Identical offspring
Less developed organism
Faster time period to produce
Sexual
Two parents
Unique offspring (genetic variation)
More complex organism
Slower time period to produce
B) One swims freely and the other often lives attached to a hard surface.
A donor offspring is the donation of sperm
Answer:
A.
Explanation:
It is A because the diagram for choice A shows correctly how cellular respiration produces energy and releases carbon dioxide and water as byproducts(CO2). And it also shows how photosynthesis release or produces oxygen gas (O2)