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Weathering breaks down rocks and minerals through mechanical, chemical, and organic processes.
Science, Earth & Space Science
Grades 9-12
Aquatic ecosystems are shaped by living (biotic) and non-living (abiotic) factors that constantly interact.
The Arctic's rapid warming is causing significant ecosystem changes, impacting wildlife behavior and landscape structure, necessitating careful planning for environmental and community well-being.
Science, Earth & Space Science, Environmental Science
Carbon is essential for life and cycles through photosynthesis and respiration.
Ecosystems are critical for biodiversity, regulating natural processes, and providing essential resources for human well-being.
Science, Earth & Space Science, Life Science & Biology
Carrying capacity is the maximum number of a species an environment can support with available resources.
Science, Life Science & Biology, Earth & Space Science
Abiotic factors like water, air, and energy are essential for life on Earth and influence the biosphere.
Plate tectonics is the theory that Earth's surface is made of moving plates that create mountains, oceans, and earthquakes.
Every autumn, something magical happens. The green landscapes we're used to transform into a vibrant mix of reds, oranges, yellows, and purples.
Every autumn, nature puts on a spectacular show as leaves transform into a vibrant tapestry of reds, oranges, and yellows.
Photosynthesis converts sunlight, carbon dioxide, and water into glucose and oxygen, providing energy for plants and releasing oxygen into the atmosphere.
Euglena are single-celled organisms that can live in both fresh and salt water.
The geosphere, especially soil, gives plants key mineral nutrients for survival.
Science, Life Science & Biology
Animal bodies are organized systems where organ systems work together to maintain health.
Eukaryotic cells likely started when a big prokaryotic cell took in a smaller one. Then they lived together in a helpful way.
Genetics explains how traits are passed from parents to offspring through DNA, chromosomes, and genes.
Gene therapy aims to treat, cure, or prevent diseases by changing or replacing faulty genes.
Mutations are changes in DNA that can happen when cells copy themselves, potentially affecting how cells function.
Biomolecules, including carbohydrates, lipids, proteins, and nucleic acids, are essential for life and contain carbon.
Meiosis is a type of cell division that creates sperm and egg cells for sexual reproduction.
De-extinction, the revival of extinct species, is being explored through cloning and genome editing, each with distinct advantages and limitations.
The digestive system breaks down food, absorbs nutrients, and removes waste, starting in the mouth and ending at the anus.
Genes are blueprints for making proteins, which are essential for building and repairing the body.
Plankton are tiny organisms that drift in water and play a big role in the planet's health.
Hydrates are crystalline compounds with water molecules in their structure, affecting their properties.
Science, Chemistry
The strong nuclear force is a fundamental force that holds the particles inside atoms together.
Copernicus introduced the idea that the Earth and other planets revolve around the Sun, challenging the long-held belief that the Earth was the center of the universe.
Science, General Science, Chemistry
Physical changes alter a substance's form or state without changing its chemical makeup.
Charles's Law states that the volume of a gas increases proportionally with its temperature when pressure is constant.
Science, Chemistry, Earth & Space Science
Chemical reactions involve the rearrangement of atoms and molecules, accompanied by energy transfer, and are classified as exothermic or endothermic based on energy release or absorption.
Science, Earth & Space Science, Chemistry
Photosynthesis uses sunlight, water, and carbon dioxide to create glucose (sugar) and oxygen, storing energy in sugar molecules.
Ions are atoms or molecules with an electrical charge caused by gaining or losing electrons.
The scientific method is a step-by-step approach used to explore the world, answer questions, and solve problems.
Enzymes are biological catalysts that speed up chemical reactions by binding to specific substrates at their active sites.
Resistors are passive components that impede electrical current, measured in ohms, and are essential for circuit design.
Science, Other, Chemistry, Career & Technical Education
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