4. How is a lead storage battery recharged? a. It is heated up.

b. The pressure on it is increased.

c. A direct current is applied to it.

d. A magnet is held close to it.

What approach is required to balance the objectives of sustainable development? balancing the objectives of sustainable development requires a(n) .

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Answer asap : ( a. how does mucus prevent the entry of pathogens? b. describe two ways white blood cells protect us from pathogens.