Yes, the absence of an atmosphere would severely affect life, temperature, and water on Earth.

On life: The atmosphere contains oxygen, which humans, animals, and plants use for respiration. Without oxygen, most life forms would die.

Plants also need carbon dioxide from the air for photosynthesis to produce food and release oxygen. Without an atmosphere, there would be no air to breathe, making life impossible.

On temperature: The atmosphere plays a crucial role in regulating Earth's temperature through the greenhouse effect. The chapter explains that gases like carbon dioxide trap heat by absorbing radiation from the warmed Earth.

Without this effect, Earth would lose heat to space and become extremely cold, especially at night. The temperature would swing dramatically between day and night, similar to the Moon which has no atmosphere.

On water: Without an atmosphere, liquid water could not exist. The atmosphere provides the pressure that keeps water in liquid form.

Without atmospheric pressure, water would either evaporate immediately or freeze. The atmosphere also contains water vapour that forms clouds and brings rain, replenishing rivers, lakes, and groundwater.

Without this water cycle, Earth would become dry and barren.

Additionally, the ozone layer in the atmosphere blocks harmful UV rays that would otherwise damage living cells.