Chemistry, 15.05.2020 10:57, joannakawata6
A farmer lost most of his crops last year because of insects. This year he decided to use pesticide to kill the insects. However, some of the insects survived the pesticide and have reproducedThe new population of insects is not affected by the pesticide. After several generations, more insects are born that survive the pesticide. What process explains the change in insect population?
A. natural selection
B. genetic engineering
C. extinction
D. artificial selection
Answers: 1
Chemistry, 21.06.2019 23:00, LarryJoeseph
Why are the trends and exceptions to the trends in ionization energy observed?
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In an exothermic reaction the bonding energy of the product is: less than the reactants same as the reactants greater than the reactants dependent upon the presence of a catalyst
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Chemistry, 22.06.2019 06:00, girly37
In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?
Answers: 3
A farmer lost most of his crops last year because of insects. This year he decided to use pesticide...
English, 02.11.2020 16:30