I put the screenshot below plz help

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

This drawing shows a human body system. what is the primary function of this body system?

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided