3.ESS.1 Earth's nonliving resources have specific properties.
3.ESS.1.a Soil is composed of pieces of rock, organic material, water and air and has characteristics that can be measured and observed. Use the term "soil", not "dirt". Dirt and soil are not synonymous.
3.ESS.1.b Rocks have specific characteristics that allow them to be sorted and compared. Rocks form in different ways. Air and water are also nonliving resources.
3.ESS.3.a Some of Earth's resources become limited due to overuse and/or contamination. Reducing resource use, decreasing waste and/or pollution, recycling and reusing can help conserve these resources.
3.PS.3 Heat, electrical energy, light, sound and magnetic energy are forms of energy.
3.PS.3.a There are many different forms of energy. Energy is the ability to cause motion or create change. The different forms of energy that are outlined at this grade level should be limited to familiar forms that a student is able to observe.
3.LS.3 Plants and animals have life cycles that are part of their adaptations for survival in their natural environments.
3.LS.3.a Worldwide, organisms are growing, reproducing, dying and decaying. The details of the life cycle are different for different organisms, which affects their ability to survive and reproduce in their natural environments.