The answer is D. You really have to think about this one :)) I hope you get it right
The answer is b, decrease the oxygen gas pressure
As you move up to the food chain, the energy will decrease. This explains that the more the consumers, the lesser the energy that the last consumer will get from the sunlight. This is because each energy will decrease as it passes by the consumers because each consumers takes a portion of the full energy from the sun.
1 poverty
2 hunger
3 drugs
4 racism
5 mental problems
( im not that sure )