Plants produce their own food through a process called photosynthesis, which takes place in their leaves. They use sunlight, carbon dioxide from the air, and water from the soil to create glucose, a type of sugar that serves as their energy source. This process occurs in special cell structures called chloroplasts, which contain chlorophyll, the gr

Dreaming is a mysterious and fascinating function of the brain that occurs mainly during the rapid eye movement (REM) stage of sleep. Scientists believe that dreams help process emotions, consolidate memories, and stimulate creativity. Some theories suggest that dreams are the brain’s way of organizing information gathered throughout the day, whi

Bird migration is a natural phenomenon in which birds travel long distances between breeding and wintering grounds. Many species migrate to find better food sources, escape harsh weather, or reproduce in favorable conditions. Birds use a combination of environmental cues, such as the position of the sun, stars, and Earth’s magnetic field, to navi

 The ocean is salty because of the continuous movement of water over rocks and minerals on land. Rainwater, which is slightly acidic, erodes rocks, releasing minerals such as sodium and chloride into rivers that eventually flow into the ocean. Over millions of years, these minerals accumulated, making the ocean salty. Volcanic activity and hydroth