<u>Answer:</u>
<em>This simulation is based on the experiment to examine the natural selection in birds.</em>
<u>Explanation:</u>
Consider a species of birds A which eats only insects. Likewise, <em>species of birds B and C </em>which eats seeds only and fruits only respectively.
When there is<em> equal amount of insects</em>, seeds and fruits then the flock of all three species will be <em>able to eat equal.</em>
But, consider another species of birds D which eats all three of those foods then this species will be able to eat the most while the species eating the single <em>type of food will end up eating the least.</em>
You multiply grams of carbohydrate in the food by 4 calories per gram. Same with protein. And multiply grams of fat in the food by 9 calories per gram. And finally, add the energy from carbohydrate, protein, and fat.
I hope I helped you :)
Yes people are trying to plant more trees and promote awareness on afforestation and some have even started making rules the 'clean air act'