Answer:
D
Explanation:
Methanogens are prokaryotes and therefore have prokaryotic cells. They are single-celled archaea. They are found in hypoxic conditions like the first stomach of ruminants where they digest molecules like cellulose and produce methane as a byproduct. The rest are composed of eukaryotic cells which are much larger than prokaryotic cells and their organelles are membrane-bound (unlike prokaryotes).
Answer: The digestive system breaks down food and the circulatory system transports nutrients to cells. Hope this helps.
Explanation:
<h2>Answer:</h2>
b.
sedimentary rock
c.
igneous rock
Sedimentary and igneous rocks may display two different pore size. According to a rough estimate the grain size of Sedimentary rocks is 5mm and grain size of igneous rock is 2mm.
The breakdown of molecules by food enzymes and acid in the stomach
I am pretty sure its called the "Biological Soup theory"... I hope I helped!
