Biology, 01.04.2021 17:30 wittlemarie
What were oxygen levels in the atmosphere like when the first cells evolved?
Answers: 2
Biology, 21.06.2019 17:30
Agene in a type of bacteria when the ses bacteria reproduce asexually this mutation can only be inherited by
Answers: 1
Biology, 21.06.2019 18:30
Which of the following are causes of coastal erosion? check all that apply. beach grasses and other plants trap windblown sand. wave action carves away the coastline. groundwater under pressure is forced to earth’s surface. artificial structures stop the natural flow of sand along the coast. underground caves collapse as bedrock is dissolved.
Answers: 1
Biology, 22.06.2019 03:30
The human genome project is devoted to mapping the general dna sequence of our species. this could lead to the development of new medicines, as well as the possibility of using gene therapy to treat certain diseases. however, there are some ethical issues surrounding the mapping of individual genomes. one concern is a) that your genes may change over time, making the project useless. b) that insurance companies could discriminate based on genetic make-up. c) that since this has never been done before, we should probably not do it now. d) that sequencing our individual genomes is so expensive, it is a counter-productive strategy.
Answers: 1
What were oxygen levels in the atmosphere like when the first cells evolved?...
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