Which experimental observation led scientists to speculate that cathode rays contained particles that were constituents of all matter? the rays were deflected by electrical fields. the rays were deflected by magnetic fields. the rays were independent of the type of gas in the vacuum tube. all of the above provided evidence of the "fundamental" nature of cathode rays?

colorectal cancer may also develop from areas of abnormal cells in the lining of the colon or rectum. this area of abnormal cells is called dysplasia and is more commonly seen in people with certain inflammatory diseases of the bowel such as crohn's disease or ulcerative colitis.

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer