The diversity of birds helps them survive by the differences in their beaks the different shapes and sizes means they all eat different food therefore that is not an issue. Different coloration is not an issue due to the species separating from each other. The diversity keeps the birds alive by signifying differences.
Hope this helps!
The answer is C. Military service (-:
The United Kingdom of Great Britain and Ireland<span> and its </span>empire<span> remained officially neutral throughout the </span>American Civil War<span> (1861–65). It legally recognised the belligerent status of </span>the Confederacy<span>, but never recognized it as a nation and never signed a treaty or exchanged ambassadors. However, the top British officials debated intervention in the first 18 months. Elite opinion tended to favour the Confederacy, while public opinion tended to favour the United States. </span>
Answer:I dont get what you mean by this but what Im thinking is that you asking what are resources that other organisms need like plants, trees, berries, and for human we need oil, gas, trees. Let me know if this was helpful!:)