I would say 1 and 4 are the best answers. GMO crops are clones (genetically identical) so it reduces the genetic diversity making crops susceptible to new diseases.
Answer: The percent error is 3.88%
Explanation:
Percent error = [(Actual bones - Counted bones)/ Actual bones] X 100%
= [(206 - 198)/206] X 100%
= [8/206] X 100%
= 3.88%
Thus, Carl's percent error is 3.88%
Answer:
Three ways a scientist can reduce bias include: 1) Sampling a larger pool (assuming the subjects are human) in order to broaden recorded data. 2) Making sure to sample more than one group. This means to not just sample one's friends, etc.