Evolution

Front

Adaptation Noun

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[ad-ap-tay-shun]

Back

Adaptation

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An inherited trait or behavior that increases an organism's chances of surviving and reproducing in its specific environment.

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Example: Different finch beaks show adaptation to specific food sources, illustrating survival traits.

Front

Krill Noun

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[kril]

Back

Krill

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Small, shrimp-like crustaceans living in the ocean that are a primary food source for many marine animals.

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Example: A swarm of krill in the ocean shows their abundance and importance as a food source for marine animals.

Front

Tobogganing Noun

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[tuh-bog-uh-ning]

Back

Tobogganing

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A method of movement where an animal, like a penguin, slides on its belly across snow or ice.

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Example: Penguins sliding on their bellies across the snow demonstrate tobogganing as a method of movement.

Front

Flippers Noun

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[flip-ers]

Back

Flippers

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The broad, flat limbs of an aquatic animal, like a penguin or seal, that are adapted for swimming.

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Example: The image shows a penguin with labeled flippers, highlighting their role in swimming.

Front

Predator Noun

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[pred-uh-ter]

Back

Predator

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An animal that naturally hunts and kills other animals for its food, which are known as prey.

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Example: A cheetah chasing a wildebeest shows how predators hunt prey for food.

Front

Wingspan Noun

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[wing-span]

Back

Wingspan

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The total measurement from the tip of one wing to the tip of the other on a bird.

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Example: The image shows a bird's wings spread to demonstrate wingspan, the distance from one wingtip to the other.

Front

Fledge Verb

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[flej]

Back

Fledge

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To develop the necessary wing feathers for a young bird to become capable of flying from the nest.

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Example: A fledgling bird has developed feathers and can leave the nest but still needs care.

Front

Mutation Noun

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[myoo-tay-shun]

Back

Mutation

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A permanent alteration or error in the nucleotide sequence of an organism's deoxyribonucleic acid (DNA).

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Example: A DNA strand with a highlighted mutation shows a change in the genetic code.

Front

DNA Noun

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[dee-en-ay]

Back

DNA

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The molecule carrying genetic instructions for the development, functioning, growth, and reproduction of all known organisms.

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Example: The image shows the DNA double helix with labeled base pairs, explaining how DNA carries genetic instructions.

Front

Natural Selection Noun

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[nach-er-ul suh-lek-shun]

Back

Natural Selection

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The process where organisms with beneficial traits are more likely to survive, reproduce, and pass on those traits.

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Example: Different finch beaks adapted to specific foods show natural selection in action.