I believe this problem has the following choices:
a. It was hard to get the fish to breed and produce
offspring for the aquaculturist to raise.
b. Because the fish were stressed in tanks, they required
much more food, reducing the profitability of rearing the fish this way.
c. The fish had to be raised in a community with several
species of fish in the same tank, and they would attack and eat each other.
d. Marine fish are more aggressive than their freshwater
relatives and they tended to fight a lot, often killing some of the other fish
in the tank.
The correct answer is:
c. The fish had to be raised in a community with several
species of fish in the same tank, and they would attack and eat each other.
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The answer is D. This is referred to as reflex reaction. Reflex is the instantaneous and involuntary reactions to a stimuli. Reflex arc does not pass through the brain so the reaction time is shorter than normal. This is a adaptation to increase survival.
Answer:
valence electrons an element has in its outer shell, the easier it is to complete.
The most electron shells an element has, the easier it is to fill its outermost shell.
Explanation:
Non metals atoms bond to other elements by sharing or completing the valance electrons in other element. This is easily made when the other element lacks a small number of electrons, for example with Hydrogen it has 1 valance electron because of that it is easier to bond with other elements.
Cancer is the typical result of cell division
