What is believed to have happened to most of the moons volatile elements?

a) they sank into the moons core.
b) they evaporated due to violent impacts.
c) they combined with lava flows to produce basalt.
d) they underwent radioactive decay and turned into other elements.

The energy available as a result of the motion of a body is called energy. -potential -gravitational -kinetic -chemical

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

Coral reefs support more species per unit area than any other marine environment on earth. what is one way coral reefs are important to the health of the biosphere