Hey there..
If I'm correct the guidelines are: reuse, reduce and recycle.
Hope it helps :)
Answer:
D. The skin
Explanation:
The skin is usually considered as supply-independent for oxygen delivery. The most affected organs and tissues considered as being supply-dependent for oxygen delivery are heart, brain and lungs. These are the most sensitive to oxygen deprivation, being the brain more than the other organs.
Designing and constructing buildings that are made of recycled materials, energy efficient, and economical, is a trend called<span> Green architecture.</span>
