Biology, 15.01.2021 21:50 slowmotion
1. A radioisotope has a half-life of 1 hour. If a sample initially contains 100mg of this
isotope, which one of the following correctly gives the amount of the radioisotope
remaining after 2 hours have passed? (1 point)
Answers: 3
Biology, 21.06.2019 22:00
Fan egg cell containing the (n+1) number of chromosomes combines with a sperm cell containing the (n) number of chromosomes, what is the result of this union? a) all future somatic cells of the organism will contain the (2n + 1) number of chromosomes. b) all future somatic cells of the organism will contain the (2n - 1) number of chromosomes. c) only certain somatic cells of the organism will contain the (2n + 1) number of chromosomes. d) all future somatic cells of the organism will contain the normal diploid number of chromosomes.
Answers: 2
Biology, 22.06.2019 00:00
Which of the following is a consequence of urban heat islands? increased precipitation downwind of the city? increased precipitation upwind of the city? decreased winds within the city? increased winds within the city?
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: 2
1. A radioisotope has a half-life of 1 hour. If a sample initially contains 100mg of this
isotope,...
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