The autonomic nervous system is a subdivision of the autonomic nervous system.
A soil deficient in humus would have very few decomposers and be unable to hold much moisture.
So, the answer would be "have unusually low levels of biological activity."
A cell is the basic unit of all life.
Dams are not associated with economic advantages.
Dams DO associate with changes to waterway ecosystems, siltation behind the dam, and dam maintenance and breajs,
Phenotype: Ww, ww
Genotype Ratio: 2/4, 50/50 or half and half