What keeps the Earth in its orbit?

A. the Sun's rotating speed
B. the Sun's gravitational pul
C. the Earth's rotatation
D. The Earth's location in relation to other planets
HELP ME

no

explanation:

since the earth is flattened at the poles and bulges at the equator, geodesy represents the figure of the earth as an oblate spheroid. the oblate spheroid, or oblate ellipsoid, is an ellipsoid of revolution obtained by rotating an ellipse about its shorter axis.

an angle + its complement = 90 degrees

answer they showed that organic molecules such as amino acids could be produced from inoragnic molecules;