Archean and Proterozonic which are both broken into early middle and late periods
Answer:
Catalyzing Chemical Reactions
Explanation:
Answer: Subsistence agriculture.
Explanation: Subsistence agriculture is a type of farming in which farmers cultivate and grow food crops and livestocks to meet their needs and that of their family.
In this type of agriculture, farm products is aimed to survival and it doesn't involve use of large-scale irrigation, chemical fertilizer, or machinery and technology.
You can physically see the phenotype of a trait, but not the genotype.
