B is the correct answer Crossing over does not occur between genes
The sugar in DNA is called deoxyribose sugar; while the one found in RNA is called ribose sugar and they are both pentose sugars with the only difference that DNA lacks one oxygen atom.
Fossae are holes or depressions in the bones that are usually found on the end of the long bones. Fossae are good indications that a bone was connected or articulated with another bone. Therefore, if a scientist has found a fossa on a bone he or she could conclude that the bone was joined with another bone in the skeleton at the place of the found fossa.
Greenhouse gases contributes the most
