A volcano with an empty magma chamber would be called a caldera
Explanation: During certain types of explosive eruptions, a volcano's magma chamber may empty enough for an area above it to subside, forming a type of larger depression known as a caldera.
Im not sure but i think its all the above
Ang babala ay binabalaan na huwag gawin ang batas ay hinde dapat gawin ang paalala ay pinapaalala na huwag gagawin
The quote states that we should be using solar energy before our limited amount of naturally occurring oil and coal runs out. Meaning; we should be proactively working towards solar power rather than to wait for our resource to run out to start.
The answer that makes the most since is A!