Abiologist wants to test some lake water for the presence of nitrates. he has a sensor that detects even the tiniest amount of nitrates by turning an internal light from green to red. 1. what will be his positive control? 2.what will be his negative control ? 3.why does he need to include these control?

Need plato answers asapselect all the correct answers.you are about to proofread your essay before turning it in. which of the following strategies should you use to maximize your effectiveness? 1. use only red pen for marking your mistakes.2. remember to look for mistakes you have made in the past.3. remember that, many times, teachers let small mistakes go.4. proofread backward, beginning from the end of the essay.5. look mostly at the introduction and conclusion.

Match each excerpt to the epic characteristics it contains

One element of lyric poetry is personal reflection. which lines in this poem most clearly illustrate that element? i wandered lonely as a cloudby william wordsworthi wandered lonely as a cloudthat floats on high o'er vales and hills,when all at once i saw a crowd,a host, of golden daffodils; beside the lake, beneath the trees,fluttering and dancing in the breeze.continuous as the stars that shineand twinkle on the milky way.they stretched in never-ending linealong the margin of a bay: ten thousand saw i at a glance,tossing their heads in sprightly dance.the waves beside them danced; but theyout-did the sparkling waves in glee: a poet could not but be gay.in such a jocund company: i gazed and gazed—but little thoughtwhat wealth the show to me had brought: for oft, when on my couch i liein vacant or in pensive mood,they flash upon that inward eyewhich is the bliss of solitude; and then my heart with pleasure fills,and dances with the daffodils.