Your carbone footprint is most closely the result of your ?

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

Crossing over is a method of (blank)?

The largest unit within which gene flow can readily occur is a