Answer:
To resign is to quit or retire from a position. You can also resign yourself to something inevitable, like death
Explanation:
The Peregrine population crashed between 1950 and 1970 due to pesticides like DDT. The future of these magnificent birds remained uncertain for nearly two decades. Thanks to the diligent work of conservationists like Tom Cade, officials removed the Peregrine from the endangered species list in 1999.
Answer:
<em>The sentences </em>A: <em> While she was studying, her dog began to lick her elbow. </em>and<em> </em>D:<em> Without a doubt, she was the fastest in her heat.</em>
Explanation:
The senteces A and D are correct because both begin with a <em>subordinate</em> clause, therefore they have <em>commas</em> to <em>separate them from the main clauses</em>. The sentence B is wrong because it is <em>not necessary</em> the use of the <em>comma</em>, since it started with the main clause. and in the sentence C, the transitional word <em>however</em>, doesn't have another statement to contrast with.