D, the black squirrels have survived because black has provided them with an advantage in this environment.
The place where an organism lives and that provides the things it needs to survive is its habitat.
Answer: Giant pandas have been allowed to persist only at elevations higher than land that can be used for productive agriculture. However, as the agricultural value of land in current panda habitat increases under a changing climate, activities like growing crops and grazing livestock may further encroach on their habitat.
Explanation:
Explanation:
Pulmonary Arteries where the blood is re-oxygenated.