Explain why humans cannot impact one of Earth’s systems without impacting the others.

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

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

Casts and mold are a type of preservation where the original material decays, leaving a mold in surrounding rock that can be filled with another sediment a. true b. false