Does anyone know what H and I are?

Which of these best describe conduction? a. transfer of heat between two objects that are touching b. transfer of heat by the actual movements of warmed matter c. the process in which energy is emitted by one object, transmitted through space, and absorbed by another d. the process in which energy is released by molecules

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

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?