Answer:Immediate threats to conservation of biodiversity
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!
The planet known for having large amounts of iron oxide in its soil and polar ice caps is Mars. Mars is actually the second smallest planet in our solar system. It is actually the fourth planet from the sun. This planet is also known by the name of Red Planet because of its red soil. This reddish color of the soil is due to the high content of iron.