Which of the following statements is true? Electrons are found in the nucleus. A piece of magnesium is made only of magnesium atoms. All 118 elements occur naturally on Earth. Protons and neutrons orbit the nucleus of an atom.

Which of these is a major trend in land plant evolution? a) the trend toward smaller size b) the trend toward a gametophyte-dominated life cycle c) the trend toward a sporophyte-dominated life cycle d) the trend toward larger gametophytes

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots

Along what geographical feature are most of the oil producing regions located