Answer:
Na+ only
Explanation:
Depolarisation of membrane refers to the change in the resting membrane potential of the membrane of a cell which is usually -70mv to a more positive value.
This value changes when the positive ions move inside the cell which increases the positive charge inside the cell.
In the myocardial cell, the sodium ions move inside the cell which changes the potential towards the more positive side as a result of which the signals for contraction arises.
Thus, Na+ only is correct.
Answer:
warm temperature
Explanation:
<em>I cannot see the choices in your image. I can only see choice A, which is "soil."</em>
"Abiotic factors" are part of the ecosystem that don't have life. However, they have an<em> impact </em>on the<u> life of the</u><u> biotic factors</u><u> </u><em><u>(living organisms)</u></em><u> in the environment.</u> Examples of abiotic factors are:<em> sunlight, temperature, climate, soil, humidity, wind, etc. </em>
"Boreal forests" are abundant on the Earth's Northern Hemisphere. The climate here is generally cold, which doesn't allow some trees to survive. It is totally opposite to the warm temperature and high humidity that you can feel in the<em> "tropical forests." </em>Such factors allow many plants and animals to survive.
Clearly, the boreal forests lack the "warm temperature" that the tropical forests have.
Answer:
Cretaceous–Paleogene extinction event
Explanation:
The Cretaceous–Paleogene extinction event, also known as the Cretaceous–Tertiary extinction, was a sudden mass extinction
Blood clots will reduce the diameter of the arteries which leads to blood pressure
