The population age structure is is simply the structure of a population in a given time period by age groups. In order to represent the population age structure in a simple and efficient way, the population pyramid is used. Depending of what type of population is dominant, the pyramid will have different shapes. It can easily show us the trends and type of demographic transition for a particular population. When there high birthrates, the pyramid tends to be widest at the bottom, but when there's low birthrates the pyramid tends to be widening in the middle and upper sections.
Answer:
organismo que consiste en una sola célula
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Espero que esto ayude.
The term that represents the X letter is an organism (organismic level).
<h3>What is an organism?</h3>
In ecology, the organism level represents the fundamental unit that interacts in a particular ecosystem.
The ecosystem level is composed of organism and abiotic factors (e.g., temperature, water resources, etc) that interact to shape a given environment.
In conclusion, the term that represents the X letter is an organism (organismic level).
Learn more about organisms here:
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Answer:
Opening of sodium channels
Explanation:
Sodium channels play important roles in transmission of nerve impulse as well in the releasing of neurotransmitter (Acetylcholine). Both of these are dependent on sodium channels. As for the transmission of impulse the first step is depolarization of nerve cells and for depolarization the opening of sodium channels is necessary.
So the neurotransmitter released from on neuron and binds to receptors on other neuron causes the opening of sodium channels. These channels cause the influx of sodium into the neuron and alternatively cause the depolarization by making the inside of cell less negative. During this process a minor amount of potassium also move out of the membrane.
<span>I'm thinking it's Eukaryote, if I'm wrong please tell me.</span>
