Answer:
If distinct biological species are to coexist in sympatry, they must be reproductively isolated and must exploit different limiting resources.
Explanation:
The human respratory system is responsible for removing 2 carbon dioxide from blood
The following options are attached to the question given above:
A) A eukaryotic cell that can make its own food
B) A prokaryotic cell that can make its own food
C) An aerobic bacterium
D) An anaerobic bacterium
ANSWER
The correct option is A.
Endosymbiotic theory is a theory that talks about the evolution of eukaryotic cells from prokaryotic organisms. The theory proposes that mitochondria and plastids {chloroplast}, which are found in eukaryotic cells were once prokaryotic cells. Based on this theory, an endosymbiosis of a cell with a cynaobacterium would result in a eukaryotic cell that can manufacture its own food because it contains plastids.
Everyone needs water to survive. Just like we need oxygen we need water.
I believe the answer to this is Competition. I could be wrong