Match the conclusion to the fact that supports it. 1. Science has encouraged growth in the agriculture industry.
2. The study of animal science leads to an array of careers.
College and advanced degrees are
often required for newer science-based
agricultural jobs.
Biotechnology has created
thousands of jobs worldwide.
A variety of jobs, ranging from
environmental quality to animal
husbandry, require a scientific
background
3.
Agricultural careers require more education than they once
did.

Astudy by solloch and et. al., in 2017, gives the map above which shows the frequency of alleles with a ccr5-delta32 mutations over 87 different countries. this mutation deletes the presence of a co-receptor (ccr5) on the outside of human t-cells (lymphocytes). some viruses, such as the one responsible for the black death and human immunodeficiency virus (hiv), require this receptor for attachment to host cells during the infection process. the black death was an epidemic that passed over northern europe during the 14th century killing nearly 60% of europeans. according to this information, which explanation best explains why northern europeans show a greater immunity for hiv than some other parts of the world?