How does the energy of an electron relate with the distance from the nucleus?

a. the closer a proton is from the nucleus, the greater the electron's energy.
b. the closer an electron is from the nucleus, the greater its energy.
c. the farther a proton is from the nucleus, the greater the electron's energy.
d. the farther an electron is from the nucleus, the greater its energy.
e. the closer a neutron is from the nucleus, the greater the electron's energy.

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.