I am not sure of the answer but I think it is d. Pesticide Use.
Answer:
Explanation:
I do not know if it helps but the basic characteristics of life are Cellular organization, the ability to reproduce, growth & development, energy use, homeostasis, response to their environment, and the ability to adapt.
Parasitic infections are a primary cause of iron-deficiency anemia in many regions of the globe.
As the name itself says, iron-deficiency anemia is caused by a lack of iron in a person's blood, meaning that there are not enough red blood cells, leading to tiredness, weakness, shortness of breath, paleness, etc. Parasites increase the risk of anemia.
Answer:
C. Oxygen concentration decreases as altitude increases
Explanation:
Higher altitudes have lower levels of oxygen and decreased air pressure.