Lake is a region filled with water (could be fresh or salt water) that surrounded by Land. (humans on average couldn't cross a lake without vehicle)
Ponds is actually simlar with lands but have considerably smaller size (could be crossed without vehicle_
Stream of pools is a stretch from river area that had noticeable water movement and above average depth.
The answer is A, because the phytoplankton is the foundation of this food web. Without your foundation, "the building will begin to crumble".
Answer:
a= 0.6818
Explanation:
Check the picture for the explanation step by step!
Like DNA, RNA is made up of nucleotides. There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine.
