Help mee please 21. A molecule is composed of two or
or more
A. substances
B. atoms
C. compounds
D. electrons

Consider the diagram below, which represents components of the biosphere. what do the two arrows in the diagram most likely represent? a. radiation b. photosynthesis c. cellular respiration d. energy conversions will give to anyone who answers quickly

Urgent. the table shows the relative blood flow through some organs in the human body that is, the percentage of blood that flows through a given organ, through which organ(s) does all the blood flow? explain the effect of exercise on blood flow to skeletal muscles.

Nh3 +02-no + h20 is unbalanced what is the balanced equation