A.) Burning waste is bad because it will pollute the atmosphere. So this is not the answer.
B.) More coal based electricity will mean more smoke and ground pollution. Not the answer
--> C.) Starting recycling programs will help reuse the material rather than tossing It in a landfill. This is the correct answer.
D.) Driving cars means pollution, again, it releases carbon monoxide into the air which is bad for the ozone layer of the earth.
Answer:
Parasitism
Explanation:
If two species, regardless the type of species are living in the same niche they would be competing for the same resources. This would lead to one of the species killing the other or possibly going extinct.
Answer:
Answer is in the explanation.
Explanation:
Let's make a system of equations.
5x+10y=550
x+y=80
Now let's use elimination
-5x-5y=-400
5x+10y=550
__________
5y=150
y=30
Then subsitute 30 in for y to find x. This will leave you with x=50. You will have 50 $5 bills and 30 $10 bills. You can check by subsituting x for 50 and y for 30 in both equations to show why it is correct. Eliminating makes it easier to solve the system of equations.