2. Mangrove forest had been classified by many governments and industries alike as wastelands, or useless swamps. Do you agree with that? Why?

No

Explanation:

Mangrove forests provide many economical and ecological benefits, such as being a nursery for many small fish and organisms that depend on the habitat to survive. They also provide rookeries for birds that make their nests within these forests. These fish are then sold to be consumed, thus the economical importance.

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).