Final answer:
The doldrums are a low-pressure area near the equator, ozone is O3 and found in the stratosphere, air has pressure due to the weight of the atmosphere, and the atmosphere helps living organisms survive by providing oxygen, regulating temperature, protecting against radiation, and supporting the water cycle.
Step-by-step explanation:
The doldrums are a low-pressure area near the equator characterized by calm or light wind and frequent thunderstorms. They are located at the equatorial region in both the Atlantic and Pacific Ocean. The doldrums are caused by the convergence of trade winds from the Northern and Southern Hemispheres, resulting in ascending warm air and low wind speed.
Ozone (O3) is a molecule composed of three oxygen atoms. It is found in the stratosphere, specifically in the ozone layer. The ozone layer is crucial as it helps protect us from harmful ultraviolet (UV) radiation from the sun. UV radiation can cause skin cancer, cataracts, and harm marine ecosystems. The ozone layer absorbs a significant amount of UV radiation, shielding us from its harmful effects.
Air has pressure due to the weight of the atmosphere above it. The air molecules are constantly moving and colliding with each other and with surfaces. This movement creates force, which results in air pressure. The pressure exerted by the air is felt in all directions and is highest at sea level due to the higher density of air molecules.
The atmosphere helps living organisms survive on Earth in several ways:
- Providing oxygen for breathing: The atmosphere contains oxygen, which is essential for the respiration of organisms.
- Regulating temperature: The atmosphere traps heat and helps distribute it across the planet, preventing extreme temperature variations.
- Protecting against harmful radiation: The atmosphere absorbs and disperses harmful radiation such as UV rays from the sun, shielding organisms from their damaging effects.
- Supporting water cycle: The atmosphere plays a crucial role in the water cycle by facilitating evaporation, condensation, and precipitation, ensuring a constant supply of water for organisms.
Learn more about Atmosphere and Ozone Layer