What is the missing first step of the following process: - The lungs expand - Air is pulled from outside the body, into the lungs - The membranes in the lungs collect oxygen molecules - Oxygen is transferred to red blood cells - Red blood cells distribute oxygen throughout the body -
Ans: The diaphragm contracts

What is the missing first step of the following process: - The lungs remove oxygen from the air - Oxygen diffuses from alveoli in the lungs to the bloodstream - Hemoglobin in red blood cells attaches to the oxygen - Red blood cells carry oxygen all around the body - Oxygen diffuses into cells from capillaries.
Ans: Air goes into the lungs

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.
Ans: You take a tray

What is the missing first step of the following process: - Owls sit at high points in trees and look around - When an owl spots a rodent they track it - When the rodent is standing still the owl swoops down - The owl grabs the rodent with their tallons - The owl uses their beak to eat the rodent.
Ans: Owls have specially adapted eyes that see better at night