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>
According to the PHS, the term "significant financial interest" includes royalty income paid to an investigator except if that income is from the investigator's current employing institution.
Analogous. This means they share a similar function (flight) but do not have the same embryonic origin.
Answer:
True
In plants, the entrance portal for mineral uptake is usually through the roots. Some mineral ions diffuse in-between the cells. In contrast to water, some minerals are actively taken up by plant cells. Mineral nutrient concentration in roots may be 10,000 times more than in surrounding soil
Explanation:
PLZ MARK BRAINLIEST