It has been theorized that all of the modern continents on earth were once part of a single continent. what scientific evidence is used to support this theory? a. the coastlines of some modern continents appear to have once fit together. b. fossils of similar lifeforms have been found on different continents. c. some of the continents that exist today have similar types of rocks.

(its a multiple choice answer)

Evidence is not used to support a theory. A hypothesis is proposed to explain evidence, and then tested to produce a theory.

Choices A, B, and C have all been observed. The theory of Pangea/continental drift was formulated to explain them.

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."

1/0.14nm = 10^10/1.4 a lot