Rearrange the following parts to form a meaningful sentence:
A. many health experts have raised concerns
B. not just about its physical impacts
C. about the rapid spread of the new virus
D. but also about its effects on mental well-being
Arrange the following in decreasing order of number of molecules contained in:
(A) 16 g of \( O_2 \)
(B) 16 g of \( CO_2 \)
(C) 16 g of \( CO \)
(D) 16 g of \( H_2 \)