The surface area of a sphere can be approximated as follows: surface area = 4πr2; where r is the radius of the sphere; π is a constant that is roughly equal to 3. using the simple approximation above, calculate the surface area of a sphere with a radius of 5 meters.

the rocks are classified by the geological process they are formed by. the three main groups of rocks are igneous, metamorphic, and sedimentary. minerals are not they are classified under the chemical classes they are in. these groups include silicates, sulfates and carbonates.

i believe it's c. the trait for large beaks will be passed on to future generations through natural selection.

since eventually smaller beaks would have to find another source of food or even eventually just die out from the lack of food.

c is the correct answer!