n its early years, psychology focused on the study of , but from the 1920s into the 1960s, American psychologists emphasized the study of . Group of answer choices

mental processes

observable behavior

Explanation:

bacteria – a word that often brings out a sense of uneasiness in most of us are, in fact, one of the earliest forms of life. it can be quite unnerving to know that there are bacteria all over your skin, hair, and even inside the body. but only a few species of bacteria are dangerous. the majority of bacteria are good, and without them, life on earth wouldn’t be possible. let’s learn more about how are bacteria essential for you to survive.

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