Many genes make up one chromosome. 46 chromosomes make 23 chromosome pairs. There are 23 pairs of chromosomes inside of a nucleus of a cell. Many skin cells make up skin.
I think that it is atmosphere but not 100% sure you might want to double check
Answer: b. asexually
Explanation:
Protist Kingdom - Includes unicellular and eukaryotic organisms such as protozoa and certain algae. Protozoa (from Greek protos, 'first'; zoou, 'animal') are single-cell eukaryotes devoid of chlorophyll; live alone or forming colonies in the most varied types of environments; they may be aerobic or anaerobic and exhibit free life or associate with other organisms.
Protists reproduce mainly asexually. Cissiparity and twitching are very common. In some cases sporulation occurs, the type of reproduction in which a cell undergoes nuclear divisions followed; Each nucleus is then isolated with a part of the cytoplasm by constituting a new surrounding membrane. Thus, several smaller cells are formed, which in turn give rise to new individuals.