Question

1. according to the video, fossils provide each of the following except:

a. examples of transitional species
b. a complete record of past life on earth
c. physical proof of extinction and speciation
d. evidence that evolutionary change tends to be gradual

Explanation:

Fossils do not provide a complete record of past life on Earth. Many organisms never fossilize due to various reasons like decomposition before fossilization, lack of suitable conditions for fossil formation (e.g., soft - bodied organisms are less likely to fossilize compared to those with hard parts like shells or bones). Transitional species (e.g., Archaeopteryx as a link between reptiles and birds) are sometimes found as fossils. Fossils of species that no longer exist show extinction, and changes in fossil forms over time can indicate speciation. Also, the gradual change in fossil forms (e.g., in the fossil record of horse evolution) can suggest that evolutionary change is gradual.

Answer:

B. A complete record of past life on Earth