How does the nervous system help an organism meet a challenge of life? It digests food in order to allow the organism to obtain energy.

It responds to stimuli to help protect an organism and maintain structure

It carries and transports oxygen to all the cells of the body.

It provides structure to protect internal organs, which helps protect the organism.

the way that the mass of carbon can be conserved through cellular respiration is through a process/law called the law of conservation of mass which even tho it undergoes a process, mass is not be destroyed or changed

a axis of a graph is a color or shade so we can all go outside and have a party so we can eat   some grilled cheese sammiches and broccoli and have some ugly fun times

i don't know why i put this, i know its not the i was just bored : p

delete this answer while you can

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.