<span>I believe it was 300 BC.</span>
It seems that you forgot the answer choices, but lucky for you, I know the answer..
Answer: creating skin tissue by combining cells from different cell lines
Through the things they eat
Hi lovely! Here are your scientific questions that are testable:
Does the type of liquid affect how fast an ice cube melts?
Does changing the temperature of water affect the buoyancy of an egg?
Does the thickness of the wire affect the power of the circuit?
Hope I helped!
