Question: What is the missing first step of the following process: - May come from different sources - The gases remain trapped in the atmosphere - Through the suns light the gases hold in heat and energy - Trap them in our atmosphere - The earth may become warmer this way.
Answer: Several types of gases form in the atmosphere

Question: What is the missing first step of the following process: - The sediment rolls down hill towards a river - The heavy items sink to the bottom - The lighter items float on the top and in convection cycles - As the river flows the sediment is moved - The sediment gets dumped through tributaries into lakes and the ocean - The sediment keeps moving around the world in convection currents.
Answer: Sediment becomes loose from the rest of the soil

Question: What is the missing first step of the following process: - Add water into the tray - You insert the tray into a freezer - The water molecules begin to slow down - The water becomes ice - The ice cubes are ready.
Answer:
You take a tray