Answer: A. A blockage in the aorta
Explanation:
A heart attack happens when one or more aorta or coronary arteries get blocked. With the passage of time, the coronary artery becomes narrow that is because of the deposition of various substances such as fat, cholesterol and other reserves. This restricts the smooth circulation of blood hence results in heart attack or heart stroke.
Answer:
b) Dd or dd.
Explanation:
Dd x dd possible combinations are just Dd or dd.
Global Warming is considered a man man treat because of the overuse of electricity and water that end up back into the ocean.
Answer: <u><em> a) Friction</em></u>
Explanation: <em>Friction is a force that opposes motion. When two objects are in contact, friction is acts in a direction opposite to the motion of the object.</em>
Answer:
Alpha particles are positively charged He nuclei. And the nucleus contains positive charged protons and neutral neutrons. On hitting the nucleus, due to similar charges, alpha particles repel away. (Like repels like)
