The kidneys filter 2of blood every hour

Which process is involved in growing crops? irrigation transportation recreation condensation

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

20 how are energy cycles and growth cycles related?