Habitat I needed more thing for it to let me answer
<span>5000000km can be written as 5.00 × 106 km in scientific notation.
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5.0 x10 6 Is your answer
<span>When an elephant flaps its ears to cool off, it is using a behavioral response to adapt to their environment/temperature. It's also known as stimuli responding to the the environment.</span>
Explanation:
c.conduct heat and electricity well
The right answer is The first image (the left one).
An atrium is an upper cavity of the heart, delimited by a thin wall, receiving blood from the bloodstream. There are two in the human heart, they allow the passage of blood from the veins (cellars and lungs) to the ventricles (right and left).
In its upper part (near the entrance of the superior vena cava) is located the sinus node, microscopic structure from which the electrical impulse which ensures the contraction of the heart (especially atrium) ...
The depolarization of the action potential is conducted step by step in the cells of the right and left atria, accompanied by a contraction of the muscle fibers.
