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Human activity can contaminate water resources by introducing excess , such as nitrogen and phosphorous found in and human waste.
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Long-period comets come from the oort cloud particles in earth’s atmosphere material from the asteroid belt the kuiper belt
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Parthenogenesis is a type of reproduction that does not require a mate. it’s rarely seen in birds and higher vertebrates. parthenogenesis involves the formation of a zygote. but this zygote is formed without fertilization. in parthenogenesis, in the absence of a male gamete, the ovum develops directly in the zygote.
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Biology, 22.06.2019 09:30
What type of appendages do sponges cnidarians roundworms annelids mollusks arthropods echinoderms and vertebrate have? jointed, not jointed, absent
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Human activity can contaminate water resources by introducing excess , such as nitrogen and phosphor...
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