Final Answer:
Clouds are made of water vapor in the atmosphere, wispy, spiderweb-like fibers from certain plants, smoke particles that cling together, and particles of pollution, thus the correct option is 1.
Explanation:
Clouds are a collection of tiny water droplets and ice crystals in the atmosphere. When the tiny droplets of water and ice crystals grow in number and mass, they become visible and form clouds. Water vapor, the invisible gas form of water, is the most common constituent of clouds. Water vapor condenses in the atmosphere and forms tiny droplets that are held in the atmosphere by the invisible air currents. This condensation process is facilitated by the presence of microscopic particles of dust, smoke, salt, and other substances in the air.
Wispy, spiderweb-like fibers from certain plants such as trees, grasses, and shrubs also contribute to the formation of clouds. These fibers act as tiny anchors for the water droplets and ice crystals in the atmosphere, allowing them to remain suspended in the air for longer periods of time. Smoke particles from burning wood or coal are also capable of forming clouds. The smoke particles have a large enough surface area to condense and create clouds.
Particles of pollution, such as exhaust from vehicles and industrial emissions, can also contribute to the formation of clouds. Pollution particles are large enough to act as condensation centers and thus form clouds. These particles can provide a platform for water droplets and ice crystals to form and stay suspended in the atmosphere for longer periods of time.
In conclusion, clouds are made of water vapor, wispy, spiderweb-like fibers from certain plants, smoke particles that cling together, and particles of pollution.