Biology, 30.09.2019 20:10, johnandashley5p65r4a
Hemlocks are a common type of tree in the northern forests of the united states. in studying one forest, a forester noticed that mature hemlocks were abundant but there were very few young hemlocks. she wondered why there were so few young hemlocks. by reading the records that other foresters in that area had kept, she learned that the population of deer living in the forest had doubled in the last five years. by reading studies on forests that other scientists had performed, she also learned that deer in similar forests like to eat young hemlocks and the young trees of other species. to test her hypothesis, the forester set up an experiment. she placed fencing around a group of 15 young hemlocks to prevent deer from eating them. she left a group of 15 young trees with no fencing around them. each day, she examined the trees for evidence that deer had been eating their twigs and branches and counted the number of trees with visible bite marks. which example is the control group for this experiment?
Answers: 3
Biology, 22.06.2019 05:30, champqc702
What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?
Answers: 2
Biology, 22.06.2019 13:10, lily1482
Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.
Answers: 1
Hemlocks are a common type of tree in the northern forests of the united states. in studying one for...
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