The layer of soil that contains the most organic material is called the horizon. a. a c. c b. b d. d

Diagram of the evolution of land plants?

All ova contain sex chromosomes corresponding to: x y xx xy

Need the diagram below, which is not drawn to scale, shows the position of the earth, moon, and sun. what type of eclipse occurs when the earth, moon, and sun are lined up in the order shown? a. planetary eclipse b. solar eclipse c. martian eclipse d. lunar eclipse