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What do animals wth echolocation have in common other than echolocation

In some plants, pointed leaves (p) are dominant over rounded leaves (p). a plant with a genotype of pp

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