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>
The answer is B I believe
D. Each trophic level contains one-tenth as much biomass
Hope this helps!
-Payshence
Answer: Altered respiratory patterns
<span><span>Explanation:
Altered respiratory patterns are late signs of increased ICP (</span>increased intracranial pressure ) and may indicate pressure or damage to the brainstem. Early signs are headache, irritability, altered respiratory patterns </span>and speech changes such as slowing or slurring.