How scientifically accurate were the claims promotional material about radio waves?

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?

Someone me with this: a mineral' is determined by its actomic structure.

Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above