1. <span>the process started with the collapse of a nebula
The universe almost certainly didn't start from the collapse of a nebula.
2. The mantle is the middle layer.</span>
1. School on weekends 2x a month
2. 16 hour work days
3. Students clean the school after each day instead of janitors
Answer:
The correct definitions are a, c and d
Explanation:
The definitions of system, heat energy and chemical energy are correct but the definition of surrounding is not correct.
Are those suppose to be words?
