What were the 3 common states of matter on Earth?

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

Miner's coal distributors does not mine coal itself, nor does it even store or handle the coal. instead, miner's solicits orders for low sulfur coal from other firms, then purchases the required amount from suppliers and directs them to ship the coal to its customers. what is miner's

Air can be considered a mixture. which statement does not explain why?