Can someone explain what do i have to do here? , especially in the blank area : )

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

What are the types of genetic recombination

An uncomfortable feeling in the ears when descending in an airplane is caused by changes in air pressure on the: a. inner ear b. middle ear c. eardrum d. hammer/anvil