Answer:
Elliptical galaxies, such as M87 have very little gas and dust. ... Both the largest and the smallest known galaxies are elliptical. Very large elliptical galaxies can reach 300 million light years in diameter. Dwarf ellipticals, which are very common, may contain only 1/100,000th as many stars as the Milky Way!
Most spiral galaxies contain a central bulge surrounded by a flat, rotating disk of stars. The bulge in the center is made up of older, dimmer stars, and is thought to contain a supermassive black hole. Approximately two-thirds of spiral galaxies also contain a bar structure through their center, as does the Milky Way.
Answer:
Parasympathetic nervous system
Explanation:
Parasympathetic nervous system (PNS) along with sympathetic nervous system (SNS) makes autonomic nervous system (ANS). ANS controls the functioning of internal processes like digestion rate, heart rate, respiratory rate etc. During a threat or stressful situation SNS is activated. It increases heart rate, respiratory rate and directs blood flow towards peripheral muscles as a part of "fight or flight response". When the situation becomes normal, PNS is activated which restores all the vitals as a part of "rest and digest" mechanism.
Since here Byron almost got into an accident, he was scared a lot due to which his SNS was activated. Eventually when he realized that he is out of danger, his PNS got activated which returned his heart rate and blood pressure to normal levels.
A community interaction would be correct!
A community is when multiple populations interact with each other, in this case the dolphins and fish.
<u>Answer:</u>
<em>The diet that helps in preventing cancer is “a diet high in fiber and low in saturated fats.</em>
<u>Explanation:</u>
Though cancer cannot be fully prevented or cured by the <em>healthy diet </em>but the risk can be lowered. By having the diet that is rich in fiber like, broccoli, beans etc. helps in preventing the risk of esophageal cancer.
The intake of oranges, berries, peas etc. helps in reducing the stomach and esophageal cancer as they are low in<em> fats and high in fiber contents.</em>