A rectangle has vertices A(1, 2), B(1, 7), C(4, 7), and D(4, 2). What is the perimeter of the rectangle?

Plants can have a positive and negative effect on the rate of weathering

Hurry on the map above, arrow 1 points to a region where most people are

The oldest seafloor in the atlantic ocean is located closest to the edge of the continents. explain how this age can be used to figure out when north america first began to separate from europe