A. true b. false. all members of a food web are equal in abundance and in their relative effects on one another.

The statement can be categorized as "False".

The food chain means that all the living things get the food and energy or nutrition pass from one to another. As you go up the food chain the abundance which the statement says stays equal actually reduces and diminishes because of loss of energy through normal procedures, for example, respiration etc.

they both go up but then go back down. they both end lower than they started. lastly, they both are competitive/the second on.

explanation:

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.