Answer:
water, air , nutrients
Explanation:
water for circulation , air for breathing , nutrients for growth
C. the crust and upper mantle
As of 2014, it was often reported in popular media and in the scientific literature that there are about 10<span> times as many microbial cells in the human body than there are human cells; this figure was based on estimates that the human microbiome includes around </span>100 trillion<span> bacterial cells and an adult human</span>
