How many pairs of chromosomes pairs do humans have
13
18
23

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

Of the groups of elements below, which are most likely to gain electrons to become anions? a. alkali metal b. boron group c. halogen d. transition metal

Write a hypothesis that answers the lesson question, “while observing a chemical reaction, how can you tell which reactant is limiting? ” hypothesis: if a substance is the limiting reactant, then . . because . .