What is the Transfer of energy from one object to another through direct contact?

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?