Question

Hutton and Lyell's research suggested that Earth:

a. is only a few thousand years old
b. changes slowly over long periods of time
c. now has geological processes that are different from those in the past
d. has not changed much over time

Answer 1

Hutton and Lyell's research suggested that Earth changes slowly over long periods of time due to gradual processes that are still operating.

Step-by-step explanation:

Hutton and Lyell's research suggested that Earth changes slowly over long periods of time. They proposed that Earth's geologic features were the result of gradual processes that were still operating, in direct contrast to the prevailing belief at the time that geologic layers were formed by catastrophic events. They argued that the same geologic processes operating in the present also operated in the past, and at the same rate.