demography : the study of the vital statistics of populations and how they change over time
B. Diffusion
C. Photosynthesis
D. Cellular respiration
A.
at the top
B.
on the right side
C.
in the bottom left corner
D.
on the left side
H2CO3 -> H2O + CO2
Answer:
this is bases
Explanation:
because, acids chemical reaction , there is no 2 written when writing an acids chemical reaction