B
A convergent boundary is an earth where two or more lithospheric plates collide
C Chromosomes break at centromeres,and sister chromatids move to opposite ends of the cell.
Answer:
answer is d) all of these choices are correct.
A subspecies is a taxonomy category that ranks below species, usually permanent geographical isolated race. <span />
Other types of enzymes can put atoms and molecules together. Breaking molecules apart and putting molecules together is what enzymes do, and there is a specific enzyme for each chemical reaction needed to make the cell work properly.
https://science.howstuffworks.com/life/cellular-microscopic/cell2.htm
