Why is a body of water cooler in the summer than the air surrounding the body of water? Water has a high heat capacity.
Water is denser than air.
Water has cohesive properties.
Water has high surface tension.

clinically, some people often have repeated allergies, eczema and respiratory infections or other parts of the infection, in this case, in addition to some routine tests such as tests for white blood cells, immunoglobulin series, lymphocyte subsets, etc., the five immune immunoglobulin tests are also necessary.

can you make it bigger i can't see it

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.