Answer:
How does methane gas affect the environment?
If methane leaks into the air before being used — from a leaky pipe, for instance — it absorbs the sun's heat, warming the atmosphere. For this reason, it's considered a greenhouse gas, like carbon dioxide.
Explanation:
Answer:
gold and copper
Explanation:
but I think there is 1 more
<u>Answer:</u> The correct answer is Option 1, Option 2 and Option 3.
<u>Explanation:</u>
A base is defined as the substance which releases hydroxide ion when dissolved in water.
For the given options:
- <u>Option 1:</u>

When ammonia is dissolved in water, it produces ammonium hydroxide which forms a basic solution.

- <u>Option 2:</u>

When sodium oxide is dissolved in water, it produces ammonium hydroxide which forms a basic solution.

- <u>Option 3:</u>

When lithium hydroxide is dissolved in water, it produces aqueous lithium hydroxide which forms a basic solution.

- <u>Option 4:</u>

When phosphorus pentoxide is dissolved in water, it produces phosphoric acid which forms an acidic solution.

Hence, the correct answer is Option 1, Option 2 and Option 3.