PH meter, which is a device used to measure hydrogen-ion activity in the solution. A PH meter is a voltmeter stuck to a pH electrode and a reference electrode. -maclittleseed
Answer:
C. Using cell phones while driving increases the likelihood of crashing.
Explanation:
As the statement mentions, science and technology have improved our livelihoods significantly. However, they have also brought numerous disadvantages.
The development of cell phones has made our lives easier. In contrast to [only] 50 years ago, <u>communication has become extremely easy and fast</u>. We are able to share our location with someone in less than a minute and to call a family member even if we are thousands of kilometers away.
However, people are now overusing these equipments, which has led to an increase of road accidents due to the lack of concentration while driving. For instance, according to statistics, in 2018 over 4,000 people died in car crashes because they were using cell phones while driving.
Therefore, <u>a negative effect of using cell phones would be C. using cell phones while driving increases the likelihood of crashing.</u>
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Theoretically it is the Chargaff's rule which entails that the ratio of purines and pyrimidines are 1. So following that rule you can solve this question.
G (purine) = C (pyrimidine) and
A (purine) = T (pyrimidine)
So G + C would be 28% and hence
A +C would be 72% i.e. 36% each.
Please note that their are certain modified bases besides these four are also there including methyl Cytosine, Methylated Adenine. But htese modification does not violate the Chargaff's rule and they follow standard Watson Crick base pairing.
<span>Meadowlarks breed in native grasslands, pastures, savannas, alfalfa and hay fields, cropland borders, roadsides, orchards, golf courses, airports, reclaimed strip mines, overgrown fields, and other open areas.</span>