The correct answer is A. Experimental group
Explanation:
In experiments, the experimental group refers to the group of subjects that receives special treatment or in which the scientist or researcher intervenes. This is the opposite of a control group that does not receive treatment and therefore, it is used as a reference to measure the effect of the treatment.
This implies, in the experiment presented Group A is the control group as they do not have special treatment because they sleep normally and Group B is the experimental group as the researcher modifies their sleep time and reduces it two hours which means in this group there is a treatment or intervention.
<span>Answer
1. electrical signal travels toward the heart
2. signal by the nodes in the atrium</span>
3. the atria contract<span>
</span>4. signal received by the atrioventricular node
5. signal transferred to the ventricles
6. the ventricles contract
Heart has a pacemaker that will continually send a signal. The primary site of the pacemaker is at the sinoatrial node, on the top right atrium. This node will send a signal to atria (which will cause it to contract) and to the atrioventricular node.
Atrioventricular node located between atrium and ventricle. It will send the signal to the ventricle(by the bundle of his) and cause it to contract.
Humid continental climate<span>, </span><span>major </span>climate<span> type of the </span>Köppen classification<span> that exhibits large seasonal </span>temperature<span> contrasts with hot summers and cold winters. It is found between 30° and 60° N in central and eastern </span>North America<span> and </span>Asia<span> in the major zone of conflict between polar and tropical </span>air masses<span>. Along with the </span>continental subarctic climate<span>, the humid continental climate is a primarily Northern Hemispheric phenomena, since landmasses are absent at the significant latitudes in the Southern Hemisphere.</span>
"The plant is producing oxygen" is the one among the following choices given in the question that would be an inference. The correct option among all the options that are given in the question is the penultimate option or option "C".
The answer is The chromosomes reach opposite sides of the cell and begin to be incorporated into two new nuclei. This is the answer because in telophase, the chromosomes that are lined up in the middle of the cell are pulled apart and start to form two nuclei for the daughter cells. To help remember this you can think of the "T" in telophase as Two, because the cell has now formed two nuclei for the daughter cells.
Hope this helps!
