Biology, 29.01.2021 18:30, christianconklin22
Edward Jenner’s smallpox inoculation experiment was based on his observation that some dairymaids who worked with cows had suffered lesions on their hands, but that these dairymaids were immune to the more severe smallpox. He inoculated James Phipps with material from the lesions on a dairymaids’ hands. Which best explains why Jenner decided to infect Phipps?
The material contained antibodies that could destroy the smallpox pathogen.
The material contained pathogens that were similar to but weaker than the smallpox pathogen.
The material had oxygen that could help the cells of the body fight off smallpox infection.
The material contained a pathogen that could attack the smallpox pathogen.
Answers: 2
Biology, 22.06.2019 01:00, Samuelgamboe
The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards. the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote
Answers: 2
Biology, 22.06.2019 13:00, minecrafter3882
Why is the statement not a hypothesis? sunflowers require soil and plenty of sunlight and water to grow and thrive.
Answers: 3
Edward Jenner’s smallpox inoculation experiment was based on his observation that some dairymaids wh...
History, 29.07.2019 20:00
Mathematics, 29.07.2019 20:00
History, 29.07.2019 20:00
History, 29.07.2019 20:00
Social Studies, 29.07.2019 20:00