The shadow of a groundhog ( or anything else ) is determined what?

Match term definition ellipse a) diagonal cross section of a cylinder circle b) diagonal cross section through the widest part of a sphere sphere c) cross section parallel to the base of a cone great circle d) shape created when a semi-circle is rotated around the y-axis triangle e) perpendicular cross section of a cone

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?

1. list three scientific reasons cockroaches may fly.