21.  A thermal blanket of warm air protects the vines in the winter months and hastens maturity through the summer.

22.  A thicker shell presumably protects the snail better.

23.  A transport policy which advocates private cars is not a policy which protects the environment.

24.  Academic freedom does not protect materials, discussions, or comments that are not relevant to the assigned subject.

25.  Access is very restricted to personnel and most systems are heavily protected by sprinklers.

26.  According to refugee experts, existing procedures failed to identify and protect genuine refugees.

27.  Advocates say that large doses of antioxidants protect against cancer by soaking up dangerous oxygen molecules that can damage cells.

28.  After mating, the territory is advantageous in protecting the eggs and young fish.

29.  Airbags are currently designed to protect average-sized adult males.