A. 1.34. x 1024 molecules H2O
The medulla oblongata<span> helps regulate breathing, heart and blood vessel </span>function<span>, digestion, sneezing, and swallowing. </span>
Answer:
The correct answer will be option-C
Explanation:
The rhythm of the heartbeat is controlled by the pacemaker of the heart called the sino-atrial node.
The SA node generates action potentials which trigger the contraction and relaxation of the atrium and ventricles. The membrane potential generation initiates by the depolarization of the cell membrane when the L type of Ca⁺² ions opens up and calcium ions enter the cell.
This depolarizes the cell until the potential threshold is reached which lies between the -40 and -30 mV.
Thus, Option-C is the correct answer.
Agree
Explanation:
It is very correct that plants cannot walk and animals can't use energy from the sun.
Locomotion is the movement of body from one place to another.
The process by which plants manufacture their food using sunlight is called photosynthesis.
- Plants are fixed, sessile and cannot move about.
- Their root penetrate deep into the earth by which they derive their own nourishment.
- Walking is one attribute of higher animals.
- Manufacturing of food using sunlight is in the exclusive preserve of plants.
learn more:
Photosynthesis brainly.com/question/4216541
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