Sam came home from school with a cold caused by a virus and his sister, ana, caught it from him. sam got well and went back to school. a few days before ana got well, sam came down with a cold again. their mother said that ana had given the cold back to sam. how likely is it that their mother is correct, and what does it mean for ana's chances of getting sick again? 1)if sam only had a mild infection of the virus he might not have acquired immunity to it and could catch it again, as could ana if she had a mild infection. 2)sam could not get sick with the same virus again since he has acquired immunity to it, so he must have a different virus which ana could catch. 3)if sam's body did not store up enough antibodies to the virus he could get sick with it again, as could ana if the same thing happened to her. 4)sam could have picked up another virus at school as well as catching the same one from ana again, so ana could get sick again with either virus.
Answers: 1
Biology, 21.06.2019 13:30
What is one benefit of a non renewable resource, such as natural gas? a. generates large amounts of electricity b. less expensive c. produces pollution d. will run out eventually
Answers: 1
Biology, 22.06.2019 00:00
Which ideas did your answer contain? check all that apply. no food for organisms no oxygen in the atmosphere no trees or flowering plants no products based on trees or plants (building materials, medicines, fuels, fibers) no fossil fuels
Answers: 3
Biology, 22.06.2019 08:30
Both male and female gametes are created during the process of meiosis. the formation of male gametes is called spermatogenesis. after telophase il of spermatogenesis, there would be are all genetically male gametes created that
Answers: 2
Biology, 22.06.2019 11:00
Need the diagram below, which is not drawn to scale, shows the position of the earth, moon, and sun. what type of eclipse occurs when the earth, moon, and sun are lined up in the order shown? a. planetary eclipse b. solar eclipse c. martian eclipse d. lunar eclipse
Answers: 1
Sam came home from school with a cold caused by a virus and his sister, ana, caught it from him. sam...
Mathematics, 29.10.2020 16:20
Mathematics, 29.10.2020 16:20
Mathematics, 29.10.2020 16:20
Social Studies, 29.10.2020 16:20
Mathematics, 29.10.2020 16:20
Mathematics, 29.10.2020 16:30