The correct answer to this question is this one: they lacked oxygen. The earliest organisms were completely heterotrophic in nature because of the reason that they lacked oxygen. <span>A heterotroph is an organism that cannot fix carbon and uses organic carbon for growth. </span>
Answer:
36 gallons
21 ponds of beef
Explanation:
since JEFF killed the bigcow he got a lot of beef and patrisha or whatever got a skinny minny cow she got 21 pounds less and aptrisha was lazy too so she had 36 gallons of milk less than JEFF
( My NaMe Is JeFf)
GiVe Me BrAiNlEsSt pLeAsE
Answer:
Point-source pollution is easy to identify. As the name suggests, it comes from a single place. Nonpoint-source pollution is harder to identify and harder to address. It is pollution that comes from many places, all at once.
)Sexual reproduction maintains a constant level of variation in the population and requires less energy.
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Answer:
<u><em>True</em></u>
Explanation:
<u><em>Most gymnosperms have reproductive structures called cones. Male cones produce pollen. Female cones contain at least one ovule. An ovule is a structure that contains an egg cell. After being fertilized, the ovule develops into a seed.</em></u>
