An organism's development from an embryo may contain clues about its history that scientists can use to develop relationships and build evolutionary trees. Ancestral characters are often preserved in an organism's developmental stages. For example, both bird and human embryos go through a stage where they have slits and arches in their necks like the gill slits and gill arches of fish. These structures are not gills and do not develop into gills in birds and humans, but because they are so similar to gill structures in fish at this point in development scientists believe that A) birds and humans evolved from fish. B) all vertebrate animals have identical embryos. Reactivate C) fish, birds, and humans share a common ancestor. D) fish evolved as a life form long before birds or humans.
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Biology, 21.06.2019 23:00
Some technological solutions to problems like global warming meet the specific needs and situations of local communities. an example from india involves converting the solid waste from cattle into clean-burning fuel for cooking. this reduces the amount of greenhouse gases, specifically methane and carbon dioxide, released into the environment from wood fires. when evaluating the feasibility of implementing this solution, computer models are used to weigh costs against benefits. what factor is least likely to impact the decision on adopting this technology?
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Biology, 22.06.2019 03:00
Be in this im starting a with you so if you want you can get a partner for this. but basically im going to assign you guys a biome and you have to have a big sheet paper and you will turn it into 4 squares. the top right square is will be a drawing square for a drawing you will make of your biome. the top left square is about the biomes plants and drawings of them. the bottom left square is about the biomes animals. the bottem rights square is about the description of the biome. leave a comment or an answer and i will assign biomes. if your request one thats the one you get. send me a link to the project and i will grade ! im not a teacher btw.
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Biology, 22.06.2019 10:30
Which of these is a provisioning service people get from the ocean
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An organism's development from an embryo may contain clues about its history that scientists can use...
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