Individuals are simultaneously added and removed from the population due to<span> mortality and emigration</span>
The answer to that question is a....true
Answer:
Language is like a way of communication. If you do not have the right word at the right time you cannot express your feelings and your say. In English there are exact words for exact things but in Hindi we repeat same words for many things this is the contraction between two languages for me if I have to say English is a very compact and brief language where you can easily learn new words and some amazing sentences and in English there are some sentences which you can only understand by the logical meaning not by the meaning that is written literally you have to use your own mind your own logic to know the exact meaning. If I write down some sentences
This sentence means that now it is time that we have to or we need to take the decision you can translate it into Hindi and make some nonsense meaning of it .
So language has its own importance logically practically and literally.
Answer:
Explanation:
Action potential
It is the potential or power or electrical energy required to generate impulses and provides communication between the neurons is called action potential. Normally cell membrane consists of potential is called resting membrane potential() -70mV. The action potential is due to exchange of different ions across the membrane.
Phases of the action potential in a neuron are
i. Depolarization- it is caused by the influx of sodium and calcium ions through the opening of voltage-gated sodium and calcium channels. sodium ion influx is rapid than the calcium ions membrane potential -70mV to +30mV.
ii. Repolarization - It causes the efflux of potassium ions into the cell through the opening of potassium channels. the membrane returning to resting membrane potential.
iii. After- Hyper polarization - in this stage the potassium channels remain open and causes re polarization and comes to normal membrane potential.
The generation of impulses(depolarization) in neuron mainly depends on influx sodium and calcium ions without these ions, no action potential developed and neuron firing does not occur.
If the drugs inhibit these channels, no depolarization, no action potential, no neuronal firing or communication.
The channels involved in an action potential are voltage-gated sodium channels, potassium channels, and calcium channels.
The action potential is required for transmission of information one are to another area in the body.
The responses to different stimuli is due to action potential.
Answer:
The Tuskegee Airmen were the first black military aviators in the U.S. Army Air Corps a precursor of the U.S. Air Force. Trained at the Tuskegee Army Air Field in Alabama, they flew more than 15,000 individual sorties in Europe and North Africa during World War II.