Essential Science Topics of Study

1234567
Across
  1. 2. crucial liquid in the environment and our bodies, needs to be clean
  2. 3. all of the stars and galaxies, beginning of everything
  3. 5. mountains, plate tectonics, layers of the earth, study of the planet
  4. 7. how organisms interact with each other to survive, food chains and energy transfer
Down
  1. 1. what surrounds the earth and where weather happens
  2. 4. what we all need to survive, renewable and nonrenewable sources
  3. 6. change in organisms over a long period of time