Explanation:
Option 1.
4y=12
Dividing 4 both sides
y=3
Division property should be used.
Option 2.

Cross multiplying each other,
y=12(4)
y=48
Option 3.
2(4y)=12
Opening bracktet in LHS
8y=12
Dividing both sides by 8 i.e.

Division property is used.
Option 4.
y+4=12
Subtracting both sides by 4 i.e.
Y+4-4=12-4
y=8
Subtraction property is used.
<em><u>It means that in option (4) Soo-Jung used the subtraction property of equality to solve an equation for y.</u></em>
Answer:
B
Explanation:
the structure is their serrated teeth & the function is tearing into their prey.
Answer: E. Polygenic
Explanation: The color of eyes and hair is due to quantity and accumulation of pigments such melanin. Melanin is synthesize by multiple enzymatic steps and every enzyme is codified by a different gene. That means polygenic inheritance, that several genes are implicated in determined the this trait and its difficult to trace since every gene has a sequence that can vary between families or human groups.
About 330,000<span> times larger</span>
Answer:
Explanation:
They need salt in the water to the tune of 35 grams / kg. If they are thrust into fresh water with virtually no salt, they do not get the natural osmosis process taking place. They will bloat and die.
Interesting question. Nature has a strange way of making things right. Those salt water shrimps can't over run the fresh water ones, for the reason given above.