Answer: Astronomers improved on Reber’s radio telescope and discovered the sources of the radio energy signals he mapped.
Explanation:
That was the right answer on the test.
The problems are the overgrazing, salinization(<span>Soil salinity)</span> and water availability.
These are included to be the problems of agriculturists in the region
<span>We can assume that her devotion to Christian ideals also guide her daily decisions. In this case, Julia's employee has violated the commandment "Thou shalt not steal", and so Julia would likely confront him or her for this transgression. Julia will likely punish the employee in some way, perhaps even firing him or her, even though the employee had selfless intentions in committing the sin.</span>
I believe the United States was wrong for expanding west because not only did they upset the natives of these areas, but also caused many major conflicts between explorers and natives.
(sorry i couldn't add more i can really think of to much more)
