Trees help purify our air. When the air is to contaminated trees take in all that contamination so we can breathe better.
We see that the obstacles that the people that found gold in California during the Gold Rush faced are: D. Traveling over land or sea and living in mining camps.
<h3>What is the California Gold Rush?</h3>
The California Gold Rush was actually known as a period when there was rapid movement of treasure seekers who came to California when gold was discovered at Sutter's Mill. It began in early 1848. It's estimated that over 300,000 came to that territory.
The challenge the people faced were travelling long distances to California over land and sea and also living in mining camps.
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Given:
<span>(2) "Let freedom ring” is a phrase which is used many times in his speech.
(3) "Let freedom ring” is a phrase that leads to an exciting conclusion.
The revised sentence that combines these two is:
</span><span>“Let freedom ring” is a phrase that is used many times to lead to an exciting conclusion.</span>
