A) Photosynthesis B) Chemical reactions C) Nuclear fusion D) Nuclear fission
A) Palm reading B) Oral traditions passed down through generations C) Analysis of cloud patterns D) Radiometric dating of rocks and meteorites
A) 500 million years ago B) 1 billion years ago C) 10,000 years ago D) About 4.6 billion years ago
A) Hydrogen B) Carbon C) Oxygen D) Helium
A) Volcanic activity B) Radioactive decay C) Solar radiation D) Tidal forces
A) Stratosphere B) Exosphere C) Photosphere D) Troposphere
A) Inner core B) Outer core C) Mantle D) Crust
A) Big Bang theory B) Steady State theory C) Nebular hypothesis D) Ptolemaic model
A) Crust B) Inner core C) Mantle D) Outer core |