1. The Sun’s gravitational pull on the moon is more than twice that ---- by the Earth.

2. The ---- of wasting in people with AIDS is similar to that seen in people who die from starvation.

3. By protecting the global community from infection before it strikes, one can ---- save millions of lives.

4. Only a few foods supply ---- amounts of vitamin, notably those derived from animals.

5. Normal dietary iron intake cannot usually ---- for iron loss from chronic bleeding.