Which of the following changes the solid earth the most? a. the rock cycle b. atmospheric convection c. the nitrogen cycle d. ocean currents

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

Each pair of clay balls represents two planetesimals. if each planetesimal is composed of the same material and is separated he the same distance, which pair experiences the frayed gravitational attraction?

Which number represents a basic ph, 4 or 9? numerical answers expected! answer for blank 1: i'll give