Which perspective would study the chemical reactions that occur in the brain

Biological

Explanation:

Biological psychology refers to the application of the principles of biology to the study of mental processes and mechanisms of behaviour in humans and other animals. This area of study overlaps with neuroscience, as biological psychology studies the chemical reactions that take place in the brain. The discipline emerged in the 18th and 19th century.

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.

the force on the thing and the distance the force moves the thing