Answer: Compound sentence.
Explanation: Compound sentences contain 2 independent clauses combined by a comma and coordinating conjuction.
[Mom baked cookies for the school picnic] - Independent clause
[Dad volunteered to grill the hamburgers] - Independent clause
Both the sentences are independent clauses and are combined by the coordinating conjuction ( and) and a comma.
Close narrators tend to be more developed.
Every narrative has a different approach, and when a narrator develops closeness with his/her audience it can be assumed that it is a more developed narrator. This is because creating a relationship with your audience takes time, hardwork and trust. And all of these things come with real effort.
Answer:
The answer is to show that Earth's water is not changing rapidly as it once was.