THE TEXT IS WATER SCARCITY:A Global Issue ON COMMONLIT! 1. PART A: Which of the
following best describes the
author's main claim in the text?
O A Water scarcity is not something that humans have
any control over, as it is caused by natural events.
OB Humans can reverse the damage they have inflicted
on the Earth's water supplies if they reduce their
pollution output.
C Widespread water scarcity threatens the right that
all humans should have to access clean drinking
water, as it is essential to live.
OD Water scarcity is an issue primarily caused by
humans that needs to be addressed by humans.

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  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-

here is table 2-2:

country

percent of eligible voters that voted

rank

united states

44.9%

138

canada

60.1%

107

costa rica

84.6%

14

hungary

66.9%

82

japan

57.0%

118

egypt

27.7%

159

south africa

85.5%

10

ans is no, the data set cannot be plotted as a single circle graph