Warm air masses are dense than cooler air masses. Rains frequently occur when fronts meet because water vapor in the air rises, then and into clouds.

Explanation is in the file

tinyurl.com/wtjfavyw

image result for describe the various types of gene mutationsghr.nlm.nih.gov

the types of mutations include: missense mutation: this type of mutation is a change in one dna base pair that results in the substitution of one amino acid for another in the protein made by a gene. nonsense mutation: a nonsense mutation is also a change in one dna base pair.

explanation:

i think its control and coordinate because im pretty sure thats what tissue does and the joints are what control movement and then your skeletal/ bones provides portection. hope that .