300 BC by Greek philosophers
Answer:
chemical reactions change reactant and produce new substance called products.
Explanation:
chemical reaction is a change which will produce a new substance. ( while physical reaction does not produce a new substance.
A scientific question is a question that is based on observations and that is testableThe scientist asks a new question about the impact of climate change on the species because the results of the investigation led to new scientific questions. Correct answer: C
That the pace of everyday life is such that is prevents individuals from perceiving that which the society deemed as unimportant.
