Greater genetic diversity, compared to asexual reproduction.
If you think about it, this makes sense because in asexual reproduction, an organism reproduces all by itself, and uses its own genome as the blueprint for its' offspring. However with sexual reproduction, two organisms come together, each contributing half the required chromosomes, and the offspring gets 1/2 it's genes from the mother and 1/2 it's genes from the father. Sexual reproduction allows for greater diversity because it doesn't just rely on mutations to add new diversity to the genepool.
I believe the answer would be sedimentary rocks.
A renewable resource is something that provides power but will never run out. Eventually natural gas and oil and coal will run out. Wind is renewable because it will never run out, unless the world ends, then it won't matter.
B) One swims freely and the other often lives attached to a hard surface.
The answer should be C, Sudan red solution.
Sudan red solution dissolves in lipids, which can show a color of orange/red if lipid is present.
On the other hand, Biuret solution/reagent is used to test for proteins, and it'll show a color or purple if protein is present.
Iodine solution is used to test for the presence of starch, and it'll show a blue black color if starch is present.
And lastly, Benedict's solution is used to test for reducing sugars, and it'll show a brick red color (or green as small amounts) if reducing sugars are present after heating under boiling water bath.