Which correctly compares the background extinction rate for mammals to the actual extinction rate over the past 400 years? 15 times lower
25 times higher
35 times lower
45 times higher

Organisms that live in the alpine and taiga biomes have developed unique adaptations that aid in their survival. the douglas-fir is a conifer tree that grows in the taiga biome. it has an average height of about 70 feet, and its wood is an important source of lumber.

Determine the volume of a cylinder bucket if the diameter is 8.5 in. and the height is 11.5 in.

Acircle has a circumference of 28.36 units what is the diameter of the circle