Cyanobacteria released OXYGEN into the atmosphere through photosynthesis
Ventilation is the process by which air moves in and out of the lungs.Diffusion is the spontaneous movement of gases, without the use of any energy or effort by the body, between the gas in the alveoli and the blood in the capillaries in the lungs.
Are you supposed to say whether these are true or false? All of these facts are true except for number 3 if that is the case.
As water vapor rises in the atmosphere, it cools and changes into liquid cloud droplets in a process called condensation
