Answer:
A good experiment must include all possible causal factors in one experimental group.
Explanation:
i cant tell if thats a choice but if not then none of the above i guess
Answer:
i think system is correct
Explanation:
for example heart is an organ. it has muscle tissue .epithelial tissue . connective tissue nervous tissue
Answer:
To survive
Explanation:
Without water, we wouldn't have organisms such as fish. We also need it to break down food molecules or generate energy during the respiration process.
Answer:
The correct answer is B.
Explanation:
The answer is partly in the name of the theory. The Endosymbiotic Theory, endo meaning "to absorb" or "to contain" and symbiotic meaning "a mutually relationship between two bodies in which both mutully benefit from" or "close physical interaction between two organisms".
The theory suggests that at some point in time, a prokaryotic cell was consumed by another cell which eventually led to the development of organelles such as mitochondria and chloroplast. The strongest evidence for this statement is the fact that these organelles have their own DNA, which can be an indication to the fact that once they were seperate organisms.
I hope this answer helps.
