Answer:
Mars (diameter 6790 kilometers) is only slightly more than half the size of Earth (diameter 12750 kilometers). Note the difference in color between the two planets. Almost 70% of Earth's surface is covered by liquid water. In contrast, Mars now has no liquid water on its surface and is covered with bare rock and dust.
Explanation:
Answer: Source 1- Who were Bell and Gray? Alexander Graham Bell was an Inventor. And Elisha Gray was a gifted electrical engineer.
Source 1- Bell was a inventor, and Grey was a engineer.
Source 1- Why did they create the inventions? They created the inventions because people wanted more and the telegraphs weren't enough.
Source 2- I would say they both had a hand in the first telephone. People are still debating on who is the true inventor. Even though Gray submitted the application first.
Explanation:
Answer: Serotonin is likely in short supply
Explanation: serotonin is a neurotransmitter produced by nerve cells that is involved in depression, appetite, and is crucial in maintaining a sense of well-being, security, etc. It is called the happy chemical because of it involvement in making one happy. An imbalance influences the mood of an individual.
<span>new economic policies that threatened social equality.</span>
