Two things that INCREASE population, would be an increase in leisure space. Another is if the area is sustainable for life. Two things that would DECREASE population, would be a scarcity of any required resources. A decrease in space, and not a sustainable area.
Answer:C) The blue star is hotter than the red star
Explanation: Blue fire is usually an indication of the hottest type of fire the range of temperature being 2,300 to 3,000 a real life example of this is if you light a lighter the bottom of the flame is blue and that part is the hottest part of the flame.
The first organism in a food chain is always an autotroph. They are producers.
The total magnification is calculated by MULTIPLYING the ocular lens magnification and the objective lens magnification.
I'm going to assume the correct answer is C.