Please help , I don’t understand this at all

Vvnici prece di evidence would best support teason #to the history of using animals for research extends asfar back as 322 bce, when early greek physician-scientists, such as aristotle and erasistratus,performed various experiments on living animals.0 animal research played an essential role in thedevelopment of herceptin and tamoxifen, twomedications that have already saved the lives ofthousands of women who have been diagnosed withbreast cancer.even those who believe in testing on animals when it isnecessary for vital medical research practice what isknown as "the 3 rs"-reduction, refinement, andreplacement to reduce the number of animals usedfor testingbiologists believe that chimpanzees share at least 98.4percent of the same dna as humans and gorillas shareat least 97 percent, making primates a popular andlikely choice for the testing of products intended for humans

Select all of the examples of expository composition. personal letter directions recipe poem fairy tale instruction sheet mystery story atlas

Read the text of the barack obama speech “remarks by the president at the 50th anniversary of the selma to montgomery marches.” which options best explain obama’s rhetorical purpose in the speech? (select all that apply.) `to celebrate an important milestone in the history of civil rights `to explain to his audience why they should welcome immigrants into america `to inspire and motivate his audience to exercise their right to vote `to inform and educate his audience about the history of social injustice in america