Answer:
answer a i took it on a quiz
Explanation:
B. Crystalline structure
C. Types of chemical elements
And
D. Amounts of chemical elements
It is important for scientists to remain open minded about information that they come across in their experiments, so that they do not become biased about the result. it can always happen that the results that come out are contrary to what the scientist expected. It is important to openly accept that the scientists prediction was wrong.
Answer:
pollution is the introduction of harmfull material in the invironment called pollution
