Plz asap i will give brainliest,

1. which of the following is an example of chemical weathering?

a stream rounds and smoothes rocks into pebbles.

a growing tree root splits a boulder in two.

freezing and thawing rainwater widens a crack in a sidewalk.

acid rain discolors and disfigures a limestone statue.

2.the sun’s energy hits earth’s surface at the most direct angle at which of the following locations?

equator

south pole

north pole

30° n or s latitude

2b2t

explanation:

2b2t

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.