Jack tries to place magnets on the door of his refrigerator. he observes the magnets don't stick. he guesses that the door of the refrigerator is made of non magnetic sunstance. what stage of scientific investigation does his guess represent

What feature do the arkansas river valley and the mississippi alluvial plain region have in common

What would the world be look like if we live without having news?

John recently received his semester grades and found that he had failed two courses. he says the reason he failed the two courses is that they were taught by female professors. john believes that women are really not smart enough to teach at the college level. in this example, the female professors are a) spacegoats and being blamed for john's grades b) being discriminatory toward john c) probably not smart enough to teach in a college d) prejudiced against john because he is male