Geothermal energy, a possible energy resource, is based on which phenomenon?

O a. There are concentrations of heat in some places of Earth's crust

O b. Earth's internal energy heats its surface more than the Sun does

O c. Heat energy from the Sun goes into the Earth

O d. Human activity is the largest source of heat energy on Earth

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.

Which fact represents evidence for the big bang theory?