I have a question my teacher today in biology said " you think you are moving your hand by yourself, but it's actually your brain sending commands to your muscles so they can move." So I wondered.. is my brain sending commands so I can think, or am I thinking whenever I have a desire to? (Not a trick question; My friend thinks this is a trick question lol).

To answer this question you have to think, "What am I really" to answer that you are your brain. When you say "am I thinking whenever I have a desire to" your brain is the "I." You think when your brain wants you to think. It rules everything that happens. It creates thoughts and commands all parts of the body.

Explanation:

it’s lava came from an explosive eruption

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.