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You need to be more careful when you cycle down a hill than when you cycle up the hill. Why.
What will happen on a see-saw if one boy is big and the other is small. How would the small boy
balance the weight of the big boy?

1.yes we need to be more careful when we cycle down a hill because

*the acceleration due to gravity

*the force of friction of air and hill when we are cycling up the hill.

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.