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

A type of sled used for racing down hills.

A winter sport involving skiing down mountains.

A technique for building snowmen.

A term describing a species that is currently alive.

A term describing a particular species, family, or other group of organisms that has no living members.

A term used to describe a species that is endangered.

A term that refers to a species that has recently been discovered.

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

A random change in an organism's DNA that has no effect on survival.

A temporary change in an organism's behavior due to environmental factors.

A process by which organisms become extinct over time.

The ability of bacteria to reproduce rapidly.

The ability of bacteria and other microorganisms to withstand the effects of an antibiotic that would normally kill them.

The process by which antibiotics are created in laboratories.

The method of using antibiotics to treat viral infections.

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

A type of footwear designed for swimming.

A tool used for flipping pancakes.

A type of bird known for its ability to swim.

A group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding to produce fertile offspring.

A classification of organisms based on their habitat and diet.

A type of ecosystem where different species interact with each other.

A method of categorizing organisms based on their physical appearance.

The scientific theory that explains how species change over time through processes like natural selection and genetic mutation.

A belief that species are fixed and do not change over time.

The idea that all species were created in their current form and do not evolve.

A hypothesis that suggests species can only change through artificial means.

A hypothesis that has not been tested

A well-tested explanation for a wide range of observations or experimental results in the natural world.

A guess based on personal opinion

A statement that cannot be proven

A group of individuals of the same species that live and interbreed within a specific geographical area.

A collection of different species living in the same area.

The total number of individuals in a specific area at a given time.

A group of individuals that do not interact with each other.

An animal that naturally hunts and kills other animals for its food.

A type of plant that consumes insects.

A human who hunts for sport.

An animal that primarily eats fruits and vegetables.

The scientific theory that all matter is composed of discrete units called atoms, which are indivisible and indestructible.

A theory that states all matter is continuous and can be divided infinitely.

The idea that atoms can be created and destroyed in chemical reactions.

A hypothesis that suggests atoms are the smallest units of matter without any internal structure.

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

The height of a bird when it is standing.

The weight of a bird in flight.

The length of a bird's body from beak to tail.

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

A method of breeding plants and animals for desired traits.

The random change in the frequency of alleles in a population.

The introduction of new species into an ecosystem.

The preserved remains, impression, or trace of a once-living organism from a past geological age.

A type of rock formed from volcanic activity.

A living organism that has existed for millions of years.

A modern-day animal that has not changed over time.

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

Large fish that inhabit freshwater lakes and rivers.

A type of seaweed commonly found in the Pacific Ocean.

Mammals that live in the Arctic and feed on fish.

The scientific theory stating that many diseases are caused by microorganisms, too small to see without magnification.

A theory that suggests diseases are caused by bad air or miasma.

The belief that diseases are caused by an imbalance of bodily humors.

A hypothesis that all diseases are hereditary.

The scientific theory describing the large-scale motion of the seven large plates of Earth's lithosphere.

A method of measuring earthquakes.

A type of rock formation found in mountains.

The study of ocean currents.

The process of passing traits from parents to offspring.

The study of animal behavior.

The method of plant reproduction without seeds.

The process of evolution over time.

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

A type of protein that helps in muscle contraction.

A carbohydrate that provides energy to cells.

A lipid that forms the cell membrane.