The word “cumulative” means that something builds on itself. Which example best shows how scientific knowledge is cumulative?

A. Watson and Crick worked together to come up with the model of DNA.

B. Kepler based his laws of planetary motions off of Newton’s law of gravity.

C. Hardy and Weinberg independently came up with a population equation.

D. Darwin and his grandfather both worked on the ideas of survivability.

PLEASE HELP ME

B

Explanation:

Cumulative means that someone came up with an idea first and someone later built an idea off of that.  Kepler basing his laws off of Newton's laws is the only option that uses cumulative knowledge.  Everything else is either completely independent or working together neither of which is cumulative.

halogen, any of the six nonmetallic elements that constitute group 17 (group viia) of the periodic table. the halogen elements are fluorine (f), chlorine (cl), bromine (br), iodine (i), astatine (at), and tennessine (ts).

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.