Some cases of anemia, which cause red blood cell production to increase in response to iron deficiency or blood loss, may lead to Group of answer choices cribra orbitalia in eye orbits. a parasitic infection. expansion and porosity of long bones. a genetic disease.

Option A, cribra orbitalia in eye orbits.

Explanation:

Cribra orbitalia (CO) in eye orbits is caused by the iron deficiency of anemia which leads to weakening of bones of eye sockets by making it porous. It is also known as porotic hyperostosis  of the orbital roof. Some of the common causes of this disease as claimed by researchers are malnutrition, insufficient diet and parasite.  

Dietary deficiencies lowers the level of  iron and other vitamins such as B9 and B12) thereby causing anemia known as megaloblastic anemia.

Hence option A is correct

it's c. (to reduce the greenhouse effect/carbon gasses)