Can you provide more of the question so I can answer it?
Explanation:
You have 20% of adenine. If you have 20% of adenine than you have 20% of thymine, because the amount of adenine and thymine is equal. 20% plus 20% is 40% of adennine and thymine. From 100% DNA bases subtract 40% and you will get 60%. Then divide this by 2 and you will get 30%. 30% of guanine and 30% of cytosine, because their amounts are equal in the DNA stand.
Answer:
The abiotic factors are the non-living parts of an ecosystem.
This includes rocks, water, metal etc.
North Atlantic Deep Water (NADW) is a deep water mass formed in theNorth Atlantic Ocean. Thermohaline circulation (properly described as meridional overturning circulation) of the world's oceans involves the flow of warm surface waters from the southern hemisphere into the North Atlantic.
It would be organelles. This is because they are all part of a cell.