What might happen to a food web if the organism in the center of the web completely disappeared?

What two fields of study provide the core information that is used to classify organisms?

What is the next step in muscle contraction after the actin changes shape? (apex)

Error analysis: what might be the reason that some of your percentages didn't exactly match your predicted results? gametes aren't responsible for inheritance. mice don't have large litters, so the sample size was not large enough. the wrong type of mice were used.