Which layer of the atom sphere contacts the surface of earth

3. on your graph, the data points between the black squares are data for elements with atomic numbers 3 through 9. locate these elements on your periodic table. what term or description would you use to identify these elements with respect to the periodic table?

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be