I think the right answer is D
Diastole is the relaxation phase of the cardiac cycle. It is the normal rhythmic dilation of the heart's valves. During this time, the valves start to gather blood inside of their chambers. There are two types of diastole that occur in the heart, and they are:
1. Ventricular diastole - this is the period where the ventricles are filling and relaxing.
2. Atrial diastole - the period in which the atria are relaxing.
This is a continuous cycle that occurs in the heart the moment a person is conceived until the person meets his/her death.
<h2>Answer and Explanation </h2>
Predators and prey play important role in an ecosystem because if we remove predators from the food chain, prey population explodes. If we remove prey from the food chain then predators will die due to lack of food. They both are important for each other. If anyone of them is removed then the whole ecosystem will be destroyed. This will distrube the entire nature which is running in a cycle.
Water
Orange juice
Hope this helps!
Answer:
Atom, smallest unit into which matter can be divided without the release of electrically charged particles. It also is the smallest unit of matter that has the characteristic properties of a chemical element. As such, the atom is the basic building block of chemistry.
Atom: has equal number of +ve charge (protons) and -ve charge electrons and hence atom has charge.
Neutrons (having no charge) and protons are present in nucleus. Electrons keep revolving around the nucleus in different shells.
