Explanation:
The Oparin and Haldane theory is known as biochemical theory for the origin of life. According to the Oparin-Haldane model, life could have arisen through a series of organic chemical reactions that produced ever more complex biochemical structures.
The answer is D. Cattle have microbes in their stomach that produce methane during digestion
A gene is the segment you’re looking for.
Animal because the algae and plant would have to have chloroplast and the bacterium does not have a nucleus as it is a prokaryote.