Answer:
In order to propose a hypothesis, there is a need to first see the function of gills in fishes. The gills of fishes comprise blood vessels that exhibit inherited tendencies of getting oxygen out of the water, which was consumed by fishes from their mouths. These gills also comprise thin walls, and when water moves over these walls of blood vessels, the oxygen from water moves into the blood, and then this oxygen-enriched blood goes to various organs.
Thus, one of the hypotheses in the given case, can be the number of blood vessels, which are found in the gills of the mentioned freshwater fish to be higher in comparison to the blood vessels found in the normal fishes, and apart from this, the surface area of the thin walls, which are found in the gills is also more in the new species of freshwater fish.
Answer: any sort of reproduction that isn't as3xual (it's censored )
Explanation: because As3xual reproduction only has one parent, the genes are the same.
C . because a foreign species could compete with a native species and drive it to extinction
Answer:
it is a heterozygous
Explanation:
because a heterozygous has two different alleles
Im pretty sure the answer would be the endocrine system, the nervous system, and the respiratory system