How did the universe begin?
The Big Bang theory, which is widely accepted by scientists, suggests that the universe began as a singularity that expanded rapidly, resulting in the formation of galaxies, stars, and planets.
What is dark matter?
Scientists believe that dark matter makes up approximately 27% of the universe, but it cannot be seen or detected by traditional methods
How do plants convert sunlight into energy?
Photosynthesis, the process by which plants convert sunlight into energy, occurs in specialized organelles called chloroplasts.
How do animals migrate?
Animals use a variety of methods to navigate, including the sun, stars, Earth's magnetic field, and landmarks.
How do vaccines work?
Vaccines work by exposing the body to a weakened or dead version of a virus or bacteria, which triggers an immune response.
How do cells communicate with each other?
Cells communicate with each other through chemical signals, such as hormones and neurotransmitters.
How do we see colors?
The retina in our eyes contains cells called cones that are sensitive to different wavelengths of light, allowing us to see a range of colors.
How do we taste different flavors?
Taste buds on your tongue detect five basic tastes: sweet, salty, sour, bitter, and umami (savory).
How do animals hibernate?
During hibernation, animals slow down their metabolism and enter a state of reduced activity to conserve energy.
How old is the Earth?
Scientists estimate that the Earth is approximately 4.54 billion years old, based on radiometric dating of rocks and meteorites.