Even though sunlight looks white, what is it really made up of?

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above