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5 Cards in this Set

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  • Back
the aurora borealis
also known as the "northern lights"; brightly colored lightsthat appear in the atmosphere above the north geomagnetic pole; caused by electrically charged particles from the sun slamming into the upper fringes of our atmosphere; the particles are guided down by the Earth's magnetic field
the deoxyribonucleic acid
the microscopic building block of life; a double helix-shaped molecule located in the nuclei of many cells that is able to make replicas of itself
the magnetic field
the area surrounding a magnetic body; some migrating birds may use earth's magnetic field to help them to navigate
the photosynthesis
a chemical process by which green plants make their food; plants use energy from the sun to turn water and carbon dioxide into food, and give off oxygen as a by-product
the DNA
the deoxyribonucleic acid