- acidic
- atom
- autotroph
- basic
- bioremediation
- carbohydrates
- cells
- cellular respiration
- chemical energy
- chemosynthesis
- compound
- consumers
- covalent bond
- deoxyribonucleic acid (DNA)
- electrons
- element
- energy
- energy conversion efficiency
- entropy
- eukaryotic
- first law of thermodynamics
- fossils
- fossil record
- genes
- geothermal energy
- half-life
- heterotrophs
- hydrocarbons
- ionic bond
- ionic compounds
- ions
- isotopes
- kinetic energy
- law of conservation of matter
- lipids
- macromolecules
- molecules
- neutrons
- nucleic acids
- organelles
- organic compounds
- panspermia hypothesis
- pH
- photosynthesis
- polymers
- potential energy
- producers
- prokaryotic
- proteins
- protons
- radioisotopes
- ribonucleic acid (RNA)
- salts
- second law of thermodynamics