Biology, 11.02.2021 23:50 kellimcollier896
Which of these are the 4 requirements for natural selection to occur?
Variation in populations
Equal access to resources
Adaptations
Overproduction of offspring
Traits are heritable
Sexual reproduction
Variation in reproductive success
Mutations
Answers: 2
Biology, 22.06.2019 06:00
Im inn a ! what"s the answer which of the following is one way creativity can scientists? by ensuring they follow the scientific method by increasing the amount of time it takes to complete scientific experiments by making sure they only try things that have already been proven by leading them to ask more questions about the natural world
Answers: 1
Biology, 22.06.2019 13:00
Astudent from one of the research labs is having trouble preparing a slide for examination and photographing. the bacterial slide that he has brought to you was prepared using a commercially purchased stain. he has asked for your in determining what he is doing wrong so that he can change the lab protocols and continue on with his project. after examining the slide under oil immersion, you determine that no bacteria are present even though the student is able to show you the culture he used to make that slide that has visible growth in the liquid medium. which of the following statements does not explain the fact that there are no bacteria present on the student’s slide? by not allowing a glass slide to completely air dry before heat fixation, the flame will cause the surrounding water to boil and this will damage the bacterial cell. overheating during the fixation step boiled the water within the bacterial cells and resulted in the cells bursting. insufficient heating of the slide did not drive out the thin layer of water and this resulted in minimal bonding between the bacteria and the glass slide. rinsing with alcohol during the washing step stripped the bacteria off the glass slide. rinsing with alcohol during the washing step stripped the bacteria off the glass slide.
Answers: 1
Biology, 22.06.2019 20:30
If there is another new infectious disease somewhere in the world, what do you think canadian officials should do
Answers: 3
Biology, 22.06.2019 21:00
What do you call the long folded tube inside the body attached to the stomach where nutrients in the food are absorbed?
Answers: 2
Which of these are the 4 requirements for natural selection to occur?
Variation in populations
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