Which of the following describes a predator? A a fish that is killed and eaten.
B a bear that kills and eats fish
C a worm that lives inside a bear
D a bear that has a worms in its gut.

b

Explanation:

a predator is a bear that kills and eats fish

B. bear that kills and eat fish

the answer to you question is   jet streams

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.