Distinguish between parasitism, commensalism, and mutualism, Using a + for benefit and a – for harm and a 0 for neither benefit or harm. Example:
Parasitism: Flea + Dog -

Commensialism – where one species benefits while the other is unaffected. Mutualism – both species benefit. Parasitism – one species benefits while one is harmed. Competition – neither benefits.

Explanation:

On occasion you may actually see tiny brown fleas moving quickly through your dog's haircoat. Your dog's constant scratching may lead to visible patches of hair loss and reddened, irritated skin. Fleas may also cause skin allergies and can transmit other parasites, such as tapeworms, to your dog

hope it will help you

the transfer for conduction is the heat transfering from the liquid to the spoon

the transfer for convection is the heat rising from the liquid to the air

the transfer for radiation is the heat going through the sides of the cup and to the air

at least that is what i would do

the answer is b.) hydrogen bonds between bases.