Is there a certain context to this question so that I can answer it better?
Answer:
Carbon dioxide is added to atmosphere naturally when organisms respire or decompose
Or through human activities, such as the burning of fossil fuels and forests and the production of cement.
Answer:
magnification will be -0.025
Explanation:
We have given the radius of curvature = 12 cm
And object distance = 3 m
So focal length 
Now for mirror we know that
So 

v = 0.750 m
Now magnification of the mirror is 
To see if the insulation would affect the temp of whatever you are measuring. <span />
Answer:
integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, lymphatic, respiratory, digestive, urinary, and reproductive
Explanation:
and this is biology not physics