Yes, you're correct, it's the first one. He should do research before he does an experiment, because someone else may already know.
Answer:
B
Explanation:
An ionic bond is formed when an atom usually metallic, loses an electron to become positively charged and another atom usually non-metallic, gains such electron lost and becomes negatively charged..
Answer:
The correct answer is:
C. Blood vessels run around bones and not through.
It is d because the law was passed around 1976 I am not sure but this is the best estimate
