The line graph below shows the average amount of dissolved nutrients in a body of water each year from 1998 to 2003. Which human activity most
likely affected this body of water between 2000 and 2003? *
The amount of rainfall will increase.
Rivers may be contaminated by sewage.
Light pollution in the town may decrease.
O
People will develop more farms in the town.

2b2t

explanation:

2b2t

it is the minimum amount of material needed to sustain a fission reaction.

critical mass is the minimum amount of fissionable material that must be assembled for a sustained fission reaction to take place. although two to three neutrons are produced for every fission, not all of these neutrons are available for continuing the fission reaction. if the conditions are such that the neutrons are lost at a faster rate than they are formed by fission, the chain reaction will not be self-sustaining.   at the point where the chain reaction can become self-sustaining, this is referred to as critical mass.