Biology, 28.10.2020 01:00 kaitlngley2367
How much land has been affected by desertification during the past 50 years?
1 million hectares
100,000 hectares
5 billion hectares
5,000 hectares
Answers: 3
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Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?
Answers: 2
Biology, 22.06.2019 17:10
Organisms may contain up to five levels of organization within their bodies. which level of organization is shown by the liver? a. tissue b. organ c. organism d. organ system
Answers: 1
Biology, 22.06.2019 18:30
Embryonic stem cells are cells derived from an embryo. these cells can be used to create new tissues for patients suffering from certain illnesses and disorders. which statement best summarizes why the use of embryonic stem cells could be seen as unethical? a. some people consider embryos to possess rights equal to those of fully developed human beings. b. extracting stem cells from embryos is a very energy-intensive process, which consumes resources that could be used elsewhere. c. embryos are difficult to obtain, so the monetary cost of using them for research outweighs their benefit. d. the process of extracting stem cells from embryos generates biohazardous waste that cannot be safely disposed of.
Answers: 2
How much land has been affected by desertification during the past 50 years?
1 million hectares
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