Answer the following questions with a picture only PLEAS. 1. What is the main source of energy for ecosystems?

2. What are some natural things that can disturb ecosystems?

About 8 gallons of fuel will be used. (8.08)

Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf   

The answer will be c

Self-ionizes to form an equilibruium system in which [ h_{3} o^{+} ]=[ oh^{-} ]=10^{-7} m