Check my answers?
Choose the word or words that the underlined appositive or appositive phrase modifies in each sentence.
1. Life on earth,"the watery planet",depends on water.
a. Life
b. Earth*
2. Water is created by a chemical reaction between two gases, "hydrogen and oxygen".
a. reaction
b. gases*
3. The oceans, "97.2 percent of Earth's water", are salty.
a. oceans
b. salty*
4Liquid water, "a substance required by all living things", allows life on Earth to exist.
a. liquid
b. water*

Question

Check my answers? 
Choose the word or words that the underlined appositive or appositive phrase modifies in each sentence. 
1. Life on earth,"the watery planet",depends on water.
a. Life
b. Earth*
2. Water is created by a chemical reaction between two gases, "hydrogen and oxygen".
a. reaction
b. gases*
3. The oceans, "97.2 percent of Earth's water", are salty.
a. oceans
b. salty*
4Liquid water, "a substance required by all living things", allows life on Earth to exist.
a. liquid
b. water*

anonymous · Answer

The only one that i think needs to be changed is 3.

anonymous · Answer

but then again im not completely sure.