What are two thighs NASA hopes to learn about earth using satellites?

Why is retrograde motion an apparent motion

Substance 33°f 100°f peanut oil solid liquid margarine solid liquid chocolate chips solid liquid which conclusion fits the data in the table? a. heat chemically changes chocolate and margarine. b. all solids become liquid at 100°f. c. removing heat from a substance it to melt. d. matter may change shape when it is heated.

An alpha particle is: a hydrogen atom a nucleus of helium two neutrons an electron