Global warming is a fact. global warming is caused by the greenhouse effects. green house effects are heat ups from the sun and make the temperatures rise! global warming is causing many problems to many animal species mostly for polar bear and penguins since the cap of ice is melting!
B fresh water, salt and sea water are the same and would kill it
The disadvantages of hydroelectric energy would be the disruption of habitats, flooding, lack of sites and that sites may stop producing energy. <span>The most common type of </span>hydroelectric power<span> plant uses a dam on a river to store water in a reservoir. Water released from the reservoir flows through a turbine, spinning it, which in turn activates a generator to produce electricity.</span>
Because pesticides and chemical fertilizers can harm crops
Answer:
B, D, and E
Explanation:
First, the formula for the area of a circle is
Since pi is equal to 3.14, all we need is the radius squared. Since your radius is 12, =144. Therefore, your equation for <em>area</em> will be (3.14)(144), answer B.
Second, the formula for the circumference of a circle is .
So, 2(3.14)(12), answer D.
Edit: Answer E also says the same as above- it just multiples the 2 and the 12 together. Sorry for the initial error!