Answer: Low population density Tend to decrease birth rates and increase mortality rates.
Explanation:
I’ve annotated your question and colour coded the answer, (the dotted line represents current bird population) and blue line represents what the population will look love after natural selection
<span>The correct answer is a substance freezes. That is because this is a change of a physical property, not a chemical one. This shows that the chemical is still exactly the same and will react the same, it is only different in its state of matter, which is irellevant for its chemical properties. It will still react the way it's supposed to react when combined with other chemicals.</span>