Building Vocabulary: Darwin's Theory of Evolution Can you match the following words to their descriptions? PartA Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Reset Help offspring 1. The phrase Darwin used to descibe his broad theory of evolution is "descent with 2. All of life is related through common ancestry, accounting for the of life unity modification natural selection inherited traits diversity 3. The of life arises from the adaptation of species to different habitats over long spans of time 4. Darwin proposed a mechanism for how evolution occurs, which he called 5. Two key observations underlying natural selection are that members of a population vary in their and that all species can produce more offspring than the environment can support. 6. Darwin inferred that those organisms with traits best suited to the environment tend to leave more than other members of a population. 7. This unequal reproduction in a population leads to the gradual accumulation of to the environment.

Descent with modification is passing of traits from parents to offspring. The best suited will reproduce to pass on the traits. This was the base of theory of evolution by Darwin.

Descending from a common ancestor is an example of unity of life. The DNA is the basis of life shared by all organism and unity of life.

Diversity is adapting to favourable environment and surviving to pass on the useful traits.

Descend and diversity are the two components of theory of evolution.

Natural selection theory by Darwin is defined as the individuals with heritable traits that are suitable for particular environment will survive and reproduce in large numbers. These will pass on the phenotypic traits to their offsprings.