Natural and Artificial Selection Crossword Puzzle

QUESTIONS LIST:

• darwins theory : theory of evolution by natural selection
• scientific theory : a well-tested concept that explains a wide range of observations
• artificial : selection exerted by humans
• fossil evidence : remains of once living organisms show change over time
• adaptation : a characteristic of a species that enables the species to survive in its environment
• adaptive radiation : species evolve from a common ancestor
• finches : a group of birds darwin studied
• trait : physical characteristics
• mutations : changes in the dna of an organism
• extinction : when species completely disappears from earth
• natural selection : process where organisms change over many generations
• mimicry : the resemblance of one species to another species
• galapagos : islands where darwin observed birds
• evolution : change in a kind of organism over time; process by which modern organisms have descended from ancient organisms.
• variation : a slight difference in the appearance of individual members of a species
• naturalist : a person who studies plants and animals by observing them
• selective breeding : the breeding of organisms for desired characteristics
• camouflage : an adaptation that enables species to blend in with their environments
• scarcity : the lack of sufficient food to meet the energy requirements of a population