Answer:
D. the cosmic microwave background radiation
Answer:
Ivan Pavlon is regarded as the father of classical conditioning using dog salivation experiment in its study.
Explanation:
The research study was carried out by Ivan Petrovich Pavlov, a Russian physiologist widely recognized mainly for his work in classical conditioning. During his juvenile days, Pavlov developed intellectual thoughtfulness along with an uncommon desire which he himself said was "the instinct for research" in his own words.
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The classification of living things includes 7 levels: kingdom, phylum, classes, order, families, genus, and species. Characteristics such as appearance, reproduction, mobility, and functionality are just a few ways in which living organisms are grouped together. These specialized groups are collectively called the classification of living things.
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