Answer:
B) salt
Explanation:
It is considered a substance because it has a uniform and definite composition. Salt easily dissolves in water, but salt water cannot be classified as a substance because its composition can vary.
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Answer:
the dissolved oxygen of the water decreases.
the fish need the oxygen for respiration, breathing through their gills.
Explanation:
The salinity decreasing doesn't affect the pickerel, because it's a freshwater fish. no salt needed.
more light penetrating the water just means that more aquatic weed or grasses would grow, giving the pickerel more area to spawn their eggs.
temperature increase in the summer has no affect on the fish, since the spawning happens in late winter.
A group of genes that operate together are known as chromosomes.
22 inches in total length