Fill in the blank Blank 1 -they share a common ancestor -they do not share a common ancestor -they are not linked through evolution Blank 2 -the Archaeopteryx evolved from birds -the Archaeopteryx came after dinosaurs but before birds -the Archaeopteryx evolved before nonflying dinosaurs

1) they share a common ancestor

2) the Archaeopteryx came after dinosaurs but before birds

Explanation:

Birds, dinosaurs and Archaeopteryx evolved from a common ancestor so we can say that they share a common ancestor. With the passage of time, changes occurs in the structure of an organism and a new species is formed. Same events occurs with ancestor of birds, dinosaurs and Archaeopteryx. Archaeopteryx is a transitional fossil that comes after the dinosaurs and before the birds. Archaeopteryx is also known as the first on the earth. With the passage of time some dinosaurs bears wing and then converted into birds.

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