What is the missing first step of the following process: - Once in the lungs, oxygen is moved into the bloodstream and carried through your body - At each cell in your body, oxygen is exchanged for a waste gas called carbon dioxide - Your bloodstream then carries this waste gas back to the lungs where it is removed from the blood stream and then exhaled - Your lungs and respiratory system automatically perform this vital process, called gas exchange -
Ans: He air we breathe contains oxygen and other gases

What is the missing first step of the following process: - The caterpillar eats constantly until it grows bigger - The caterpillar starts to form a cocoon around itself - The caterpillar becomes a pupa - After some time the cocoon hatches - And a butterfly is born.
Ans: A larva is born

What is the missing first step of the following process: - They are buried under layers of soil - Pressure builds over time - The remains liquefy - The carbon atoms rearrange to become a new substance.
Ans: Plants and animals long ago died

What is the missing first step of the following process: - Slide out the bottom rack - Take a dirty plate - Rinse the plate - Place the dish in the rack - Repeat leaving enough space for water to reach all items - Fill the soap cup - Turn on the dishwasher.
Ans: Open the Dishwasher