All of the above options have contributed to our understanding of the history of life on Earth.
A. Fossil record: scientists have found fossils of extinct species of plants and animals, which provide evidence of what life was like in the past.
B. Radioactive dating: this technique helps determine the age of fossils and rocks by measuring the decay of radioactive isotopes.
C. Branching trees: scientists use the evolutionary relationships between living organisms, as well as fossil evidence, to construct branching trees that show how different species are related to each other.
D. DNA studies: scientists can compare the DNA of different species to determine their evolutionary relationships and construct branching trees based on this evidence.
How have scientists learned about the history of life on Earth?
A. fossil record
B. radioactive dating
C. branching trees
D. DNA studies
1 answer