The right answer is smelly garbage.
Infestation is the penetration into the body of a parasite whose nature is not microbial.
smelly garbage is not synonymous of infestation, because the olfactory system only detected smelly metabolites of these microorganisms. This does not necessarily mean that the microorganism has managed to penetrate the body.
By cons other proposals are signs and tools for infestation (torn packaging with food leaking out, dead insect bodysuits, feathers, and fur).
Answer: D
Explanation:
During the process of photosynthesis the plant would use carbon dioxide, sunlight and water in order to produce and release sugar and oxygen back into the air.
The answer is D) proteins
Troposphere
Stratosphere
Mesosphere
Thermosphere
Exosphere