Biology, 31.07.2019 01:30 georgeonnatreev3400
In an ecosystem, marsh snails feed on phytoplankton and painted turtles feed on marsh snails. pollution has resulted in the depletion of phytoplankton. what effect would this situation likely have on the populations of marsh snails and painted turtles? the population of marsh snails will decrease, but the population of painted turtles will increase. the population of marsh snails will increase, but the population of painted turtles will decrease. the populations of marsh snails and painted turtles will increase. the populations of marsh snails and painted turtles will decrease. the populations of marsh snails and painted turtles will not be affected.
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Biology, 21.06.2019 15:00
Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)
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Biology, 22.06.2019 13:00
Astudy by solloch and et. al., in 2017, gives the map above which shows the frequency of alleles with a ccr5-delta32 mutations over 87 different countries. this mutation deletes the presence of a co-receptor (ccr5) on the outside of human t-cells (lymphocytes). some viruses, such as the one responsible for the black death and human immunodeficiency virus (hiv), require this receptor for attachment to host cells during the infection process. the black death was an epidemic that passed over northern europe during the 14th century killing nearly 60% of europeans. according to this information, which explanation best explains why northern europeans show a greater immunity for hiv than some other parts of the world?
Answers: 1
Biology, 22.06.2019 15:30
Which term specifically refers to an area of the body between a medial and lateral structure
Answers: 3
In an ecosystem, marsh snails feed on phytoplankton and painted turtles feed on marsh snails. pollut...
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