The suns energy reaches the earth by

a: conduction

b: convection

c: radiation

d: fusion

The answer is option C "radiation." When the sun gives off energy it travels and hits the Earth which what keeps the Earth cool, which is radiation. The Ozone layer helps the Earth by absorbing harmful heat ways that can be dangerous to the Earth and if we didn't have the Ozone layer the temperature would increase dramatically.

Hope this helps!

Nonportrit

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).

c-14 is carbon-14, or radiocarbon.   it is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.