In yellowstone national park, there are dozens of spectacular thermal pools filled with very hot water that rises from deep underground. in each thermal pool, there is a community of microbes that create the spectacular colors we can see in them. these microbes are very temperature sensitive. between 1990 and 1997, the temperature in this pool was 89 degrees c. in 1997, a small, cool surface stream changed course and flowed into the pool, lowering the temperature by 7 degrees c. this significantly lowered the allele frequency of the heat tolerant allele. after 2 years, the stream changed course again and the temperature in the pool returned to its original 89 degrees, returning the allele frequency of the heat tolerant allele to its pre-1990 level. this story illustrate
Answers: 2
Biology, 21.06.2019 13:30
The energy of blowing wind can be harnessed to create electricity. why is wind considered a renewable energy source? a) wind does not cause destruction of the environment.b) wind turns the blades of a windmill that creates electricity.c) wind provides only a very small amount of electricity to the united states.d) wind comes from atmospheric conditions that are available indefinitely.
Answers: 2
Biology, 21.06.2019 21:00
In natural selection, what is actually “selected? ” a) alleles are directly selected b) genotypes are directly selected c) phenotypes are directly selected d) entire populations are directly selected
Answers: 2
Biology, 22.06.2019 04:40
Hurry where is the majority of earth's water found? o glaciers o oceans ground o rivers and lakes
Answers: 1
Biology, 22.06.2019 09:30
What type of plant is good for a bioassay and where can i buy it? i only have a month.
Answers: 2
In yellowstone national park, there are dozens of spectacular thermal pools filled with very hot wat...
English, 16.10.2019 17:40
History, 16.10.2019 17:40
Biology, 16.10.2019 17:40
Mathematics, 16.10.2019 17:40
Mathematics, 16.10.2019 17:40
History, 16.10.2019 17:40
Health, 16.10.2019 17:40
History, 16.10.2019 17:40
English, 16.10.2019 17:40
Mathematics, 16.10.2019 17:40
History, 16.10.2019 17:40
History, 16.10.2019 17:40
Biology, 16.10.2019 17:40
Mathematics, 16.10.2019 17:40