Animals respond to threats in their environme
the result, mostly, of interactions
OD
3
C
A.
the circulatory system and the reproductive syste
O
B.
blood circulation and hormone production
the nervell system and the muscular
D.
respiratory rate

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.