Polar attractions are . (a) forces between atoms with partial charges. (b) weaker than covalent bonds. (c) important because they are numerous. (a) and (b) are true. (c) is false. (a), (b), and (c) are correct.

A, B, and C are correct.

Polar attractions are (a) forces between atoms of partial charges.(b) weaker than covalent bond.(c) they are numerous.

Explanation:

Polar attractions take place between atoms with partial charges. They are weaker than covalent bond and numerous of them occur in the living cells. They can form between H and other electronegative atoms like oxygen provided they have strong partial charges.

parasites can detrimentally affect their host, but also must not allow their host to die before they can complete their life cycle. some parasites have complex life cycles with many different hosts, and have had to find ways of persisting in many different environments during the change from one host to another. ectoparasites live outside the body of the host, and can more easily  disperse, but are  more exposed to predators, parasites, parasitoids. endoparasites live inside the body of the host, and are therefore protected from the outside environment. but they can be  attacked by the host's immune system. they have therefore developed  mechanisms for dispersal such as  complex life cycles.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.