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25 articles · science · page 1 / 2
Water can exist as a solid, liquid, or gas depending on temperature.
The Sun is a star that provides light and heat essential for life on Earth.
Plants use sunlight, water, and carbon dioxide to produce food through photosynthesis.
Magnets attract iron and steel objects and have two poles that behave differently.
Air is a mixture of gases, mostly nitrogen and oxygen, that surrounds the Earth.
Food contains carbohydrates, proteins, fats, vitamins, and minerals that keep us healthy.
Rain forms through the water cycle when water evaporates, rises, condenses, and falls back to Earth.
The human skeleton consists of 206 bones that support the body and protect vital organs.
Visible light contains all the colors of the rainbow, which separate when light passes through a prism.
All living organisms are made of cells, the smallest structural and functional units of life.
Newton's three laws of motion describe how forces affect the movement of objects.
DNA carries genetic information that determines inherited traits passed from parents to offspring.
Electric circuits allow current to flow through conductors, powering devices in our daily life.
Earth's crust is divided into moving tectonic plates whose interactions cause earthquakes and volcanoes.
The periodic table organizes all known elements by atomic number and reveals patterns in their properties.
Sound is a mechanical wave that travels through vibrations in a medium such as air or water.
Ecosystems are communities of organisms interacting with each other and their environment through food chains.
Quantum mechanics reveals that subatomic particles behave according to probabilistic laws rather than classical determinism.
CRISPR-Cas9 is a precise molecular tool that allows scientists to edit specific DNA sequences in living organisms.
Black holes are regions of spacetime with gravity so strong that nothing, not even light, can escape them.
Neuroplasticity is the brain's ability to reorganize itself by forming new neural connections throughout life.
Human emissions of greenhouse gases are amplifying the natural greenhouse effect and driving global climate change.
Antibiotic resistance evolves through natural selection as bacteria with resistance mutations survive drug treatment.
Dark matter and dark energy together constitute about 95% of the universe yet remain among science's greatest mysteries.