Answer:
Species are fixed and Earth itself is less than 10,000 years old.
Step-by-step explanation:
One theory states that species are fixed, or permanent on the earth and no change occurs. The second theory was that Earth itself is less than 10,000 years old and no change occurs in it. These two ideas present before Darwin's theory of discovery of natural selection which is rejected after Darwin's theory because Darwin's theory is based on evidences.