Asubstance that undergoes radioactive decay is than what it turns into

Can someone me with these questions plz.

Gymnast always perform on padded mats. how does the mats protect the gymnast

The gulf stream is a warm water current that flows away from the equator to northern europe. witch of these does it cause. a. crashes of warm and cool water in the ocean b. colder climates near the equator c. large waves on the cost of europe d. warm climates in northern europe