Due to the atomic mass, different for every element, hydrogen is the lightest element and it's a gas at room temperature due to its properties like point of ebollition. iron is a heavy solid because it has a high atomic mass and a high point of fusion(temperature needed to melt it).
The charge of the electrical impulses sent from stimuli is extremely positive. Thus, the correct option is A. The net charge of such electrical impulses is positive because of the positively charged ions of the Na+.
<h3>What is an electrical impulse?</h3>
An electrical impulse may be defined as a nerve impulse that contains an electrical signal which travels throughout the body by the axon terminal.
In the resting potential state, the potential difference is -80mV, while after reaching the electrical impulse it changes to +40mV. This happens due to an electrical imbalance between sodium and potassium influx and efflux.
Therefore, the correct option is A.
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1. our bodies convert chemical energy into electrical energy by moving.
sorry i could only find one.
The survival of every ecosystem is dependent on the producers<span>. Without </span>producer s<span>capturing the energy from the sun and turning it into glucose, an ecosystem could not exist. On </span>land,plants<span> are the dominant </span>producers<span>. Phytoplankton, tiny photosynthetic organisms, are </span><span>the most common producers</span>
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Toxic chemicals is a major cause of water pollution. In most cases, the toxic chemicals came from the residual from production process after companies done making their product
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