The two types of limiting factors are Density - dependent and Density independence. <span> Density-dependent limiting determinants depends on the community size; the comprehensive population, the consequential influence a density-dependent limiting agent will ought. Density-independent limiting determinant does not really depend on inhabitants dimension, alternatively they change all populations proportionately. </span>
The normal membrane potential inside the axon of nerve cells is –70mV, and since this potential can change in nerve cells it is called the resting potential. When a stimulus is applied a brief reversal of the membrane potential, lasting about a millisecond, occurs. This brief reversal is called the action potential
<span>A stimulus can cause the membrane potential to change a little. The voltage-gated ion channels can detect this change, and when the potential reaches –30mV the sodium channels open for 0.5ms. The causes sodium ions to rush in, making the inside of the cell more positive. This phase is referred to as a depolarisation since the normal voltage polarity (negative inside) is reversed (becomes positive inside). </span>
<span>Repolarisation. At a certain point, the depolarisation of the membrane causes the sodium channels to close. As a result the potassium channels open for 0.5ms, causing potassium ions to rush out, making the inside more negative again. Since this restores the original polarity, it is called repolarisation. As the polarity becomes restored, there is a slight ‘overshoot’ in the movement of potassium ions (called hyperpolarisation). The resting membrane potential is restored by the Na+K+ATPase pump.</span>
In the periodic tables metals are on the left side and nonmetals are in the right side.... so we can know whether an element is metal or nonmetal by it's position on the periodic table..
A is the answer
because
C and G binds together
A and T binds together
AND so on....
The gas produced by respiration ,which is carbon dioxide, is the they type of gad that plants need to survive. The principles plants need to survive is carbon dioxide, water, and the sun's solar energy. And the things the give off is oxygen and natural sugar. While we need oxygen to be able to breath the need our carbon dioxide to survive as well, so it works in a cycle.
