1. even a moderate activity level can increase energy output by 30%.
true
false

2. the level of body fat for mere survival is the same as the amount needed to work and reproduce.
true
false

3. fat pattern distribution does not vary between ethnic groups.
true
false

4. body fat patterns can be changed by strenuous exercise and have no genetic factors involved in them.
true
false

So based on the given statements above, here are the answers:
1. The answer would be TRUE. It is true that even a moderate activity level can increase energy output by 30%.
2. The answer would be TRUE. It is true that the level of body fat for mere survival is the same as the amount needed to work and reproduce. Fats are also necessary in the body for they contain essential nutrients and help in the manufacture of biochemicals.
3. FALSE. It is not true that fat pattern distribution does not vary between ethnic groups. 
4. TRUE. It is true that body fat patterns can be changed by strenuous exercise and have no genetic factors involved in them.
Hope these answers help.

Olfactory epithelium i believe