After folding your patterns, answer each of the following questions in the essay box below. 1. Which crystal system has the simplest structure?
2. Do all minerals have crystal structures?
3. The flat sides of a crystal are called faces. How many faces does the hexagonal crystal have?

Imagine a rocket launching from earth and travelling to the moon. in which order would the rocket pass through the layers of the atmosphere? thermosphere, mesosphere, stratosphere, troposphere troposphere, mesosphere, stratosphere, troposphere thermosphere, stratosphere, mesosphere, troposphere troposphere, stratosphere, mesosphere, thermosphere

Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above