Questions: You and your friend inspect a group of fossils from different organisms with various features. Your friend is convinced that all of the fossils are unrelated, but you find evidence that these organisms share an ancestor. What is an example of evidence that you could use to best support this argument? (1 point) tooth features patterns in limb structures number of bones heights

The answer is the second one: patterns in limb structures.

Explanation for each option:

1. Tooth features: While tooth features can provide some information about diet and lifestyle, they are not as strong an indicator of common ancestry as limb structures. Different species can have similar tooth features due to convergent evolution rather than shared ancestry.

2. Patterns in limb structures: This is the best evidence to support the argument that the organisms share a common ancestor. Homologous structures, such as similar patterns in limb bones, indicate that different species have evolved from a common ancestor. These structures may have different functions now but share a similar underlying anatomy.

3. Number of bones: The number of bones alone is not a strong indicator of common ancestry. Different species can have the same number of bones due to convergent evolution or other factors.

4. Heights: Heights are not a reliable indicator of common ancestry. Height can vary widely within species and is influenced by many factors, including environment and nutrition.

Summary: Patterns in limb structures provide the best evidence to support the argument that the organisms share a common ancestor, as they indicate homologous structures derived from a common evolutionary origin.