I believe the correct answer is C. Nektons include bony fish and squid.
Tissue typing is a screening process in which cell markers in a donated organ or tissue are identified so that they can be matched to a recipient with similar cell markers. This has become more important in recent years because of the number of organ transplants
Answer:It causes random changes and the allele frequency of certain traits may increase or decrease.
Explanation:
Hope I am right
The correct answer is C. To block UV radiation. Ozone filters the majority of UV spectra, so it protects organisms from its effects.
A molecule is a carbohydrate if it contains carbon and water