The anwer is DNA to your question
That would be A.
Cells have specific receptors for different hormones that allow the intake of them.
Meiosis (SEXUAL cell division) is a type of Mitosis (cell division).
Diploid cell production happens during meiosis when the haploid (n) cells from the parents divide into TWO diploid (2n) cells (which have the complete set of chromosomes from the parents).
Basically, meiosis is required for sexual reproduction (unless in your question you can choose more than one answer...so it'll be meiosis, diploid cell production, mitosis)
A microscope because it needs to be magnified
Answer:
https://en.m.wikipedia.org/wiki/Water_resources
can't upload the image though...