What environmental change happens when the number of prey in a certain area decreases? Climate change
Increased predators
Pollution
Reduced space

City a and city b had two different temperatures on a particular day. on that day, four times the temperature of city a was 8â° c more than 3 times the temperature of city b. the temperature of city a minus twice the temperature of city b was â’3â° c. what was the temperature of city a and city b on that day? city a was 5â° c, and city b was 4â° c. city a was 3â° c, and city b was â’1â° c. city a was 8â° c, and city b was â’3â° c. city a was 5â° c, and city b was â’5â° c.

What substance has a mass of 9.5g and volume of 2.1cm^3

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.