Question

What knowledge did Darwin’s theory need in order to be tested, which he didn’t have at the time?

A. Adaptations
B. Age of the Earth
C. Living organisms
D. Fossils

Answer 1

B. Age of the Earth

Step-by-step explanation:

The answer can be found on the slide with the heading "Could Darwin Explain Everything?"

Victorian scientists found it difficult to test Darwin's theory. For Darwin's theory to work, the Earth needed to be millions of years old, but it's age was not known at the time.

Therefore, the answer is B. Age of the Earth.

Answer 2

D. fossils because he was never able to find them