Sunlight is the main change! sun light cannot penetrate into the deep layers of the ocean and availability of oxygen is also low there. this causes the considerable amount of organisms to live in the upper layers of the ocean and we can only observe decomposing organisms in the deeper layers!
ACTUALLY the correct answer is Epipelagic and Mesopelagic in order to find more prey. I just took this question and i got it correct. youre welcome :)
Organs, cells with the same function make up tissue and tissue makes up the organ
A, because the temperature and pH in the stomach are already suitable for the enzymes' actions.
Answer:
True to some extent...
Explanation:
We can use bio-informatical tools like MEGA to see that to what extent an amino acid sequence shares ancestry with the other one. But these tools are based on statistical methods and mathematical modelling that make them unreliable as compared to the real world observations.