Yes, you're correct, it's the first one. He should do research before he does an experiment, because someone else may already know.
It is true i’ve had this on my test before
please give brainliest i wanna reach next rank
thanks!!
Th RECTUM is placed at the lower end of the large intestine.
Negative ion <span>occurs when an atom gains an electron (negative charge) it will have more electrons than protons.</span>
Answer: A. mitosis
Explanation: Mitosis is used to produce daughter cells that are genetically identical to the parent cells. The cell copies - or 'replicates' - its chromosomes, and then splits the copied chromosomes equally to make sure that each daughter cell has a full set.