Answer:
Group 4
Explanation:
<em>The control group in this case would be those students in </em><em>group 4.</em><em> </em>
<u>The control group during an experiment is a group that does not receive the treatment administered to other groups and as such used as a standard for measuring the effects of the treatment on other groups. </u>Whatever differences that exist between the control group and the various treatment groups is attributed to be as a result of the treatment administered to the groups.
<em>In this case, group 4 only used warm water for washing their hands instead of the hand sanitizer/soap used by the other groups. Whatever differences found out in the bacterial count in their respective culture swabs can be attributed to the effects of the hand sanitizer/soap.</em>
Normally a 10× drop for each trophic level, so I'd say 2,000 kilocal.
The type of solar weather during which we can predict power grid operations on Earth to degrade is Coronal Mass Ejections
Coronal Mass Ejections are what we call the sudden bursts of plasma and charged ions released from the suns solar corona. These CMEs tend to occur during solar flares and release the charged ions into the solar wind.
Despite the presence of all of the options during a solar storm, the correct option is option 3, Coronal Mass Ejections because without the presence of the CME , solar wind and flares are not dangerous to the Earth. The charged ions from the CME collide and warp the Earth's magnetic field, removing it's protection and causing <u>power grid failures and radio communication disruptions throughout the Earth.</u>
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Answer: c.they must be used for photosynthesis
Explanation:
c.they must be used for photosynthesis
B, because when going to court public opinions are required.