In atoms, electrons surround the nucleus in?

a) random patterns
b) specific energy levels
c) orbits like the planets
d) a “plum pudding” type arrangement

What does the process of natural selection involve

Ted and emily played a mixed doubles tennis match against jack and brenda. in the second match. ted and brenda played against jack and emily. which type of chemical reaction does the situation demonstrate?

If i add water to oil what will happen