Biology, 12.02.2021 14:00 amychan123
Antibiotics have been used to treat bacterial infections since the 1940s. In
recent years, many antibiotics have become less effective as resistance to
these treatments rises. Which statement best describes how bacterial
resistance to antibiotics demonstrates natural selection?
Answers: 3
Biology, 22.06.2019 12:30
Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled
Answers: 1
Biology, 22.06.2019 13:20
Aragonite shells of clams, snails, or scleractinian corals may be preserved unaltered in cenozoic deposits, but they are generally dissolved or recrystallized in older deposits. true or false
Answers: 1
Biology, 22.06.2019 14:30
The table above shows five different types of chromosomal abnormalities that can occur during meiosis. they result in either an individual having too many or too few chromosomes in their genome. what is the most likely cause of these chromosomal abnormalities?
Answers: 1
Biology, 22.06.2019 17:00
Which of the following describes what an activator an enhancer are
Answers: 2
Antibiotics have been used to treat bacterial infections since the 1940s. In
recent years, many ant...
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