The energy organisms need to live and grow first enters the ecosystem when what happens? Group of answer choices Plants take in light energy from the sun primary consumers eat plants for food.

decomposers break down dead organisms.

secondary consumers eat primary consumers.

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   

C) the increase in atmospheric pressure pushes the walls of the balloon outward thus making it  is the answer.hope i you.

The correct answer is "hydrogen".