Answer:
A). dissolved into other substances
Explanation:
Process of elimination-
B) loss of protons-mechanical reaction
D) reorganized into different substances-physical reaction
The main responsible for the delay among the atrial and
ventricular contractions is the action potential conduction velocity of the AV
node cells. If the atria and ventricles contract simultaneously, atria cannot
give any help in filling the ventricles, which is needed, especially in those
with stiff ventricles as in the elderly. Hence atria have to contract first and
then the ventricles.
<u>Answer:</u>
The sequence of the bases in DNA is most important because it provides the instructions for the traits of an organism.
<u>Explanation:</u>
- 'Deoxyribonucleic Acid (DNA)' is an instruction carrier. DNA stores the information and passes it from one generation to another.
- It stores all the information that helps in growth, development and different characteristics developments.
- So, the 'sequence of DNA bases' is important to be transferred during the reproduction that transfers the characters from parents to children.
Convection currents are caused by the heat from the inner core.
Hope this helps!
