What u think it is? what answer?
1. skin tears saliva stomach acid with all produce friendly bacteria. 2. active immunity is when one has a disease or live pathegon and is immune to it afterwards. unlike passive immunity
To answer the question that is: "which factors affect a river's load", we have to understand that all the things mentioned are important. All these options (river's slope, streambed shape and volume of flow) affect the amount of energy that the river has to spend and the way the river spend that energy, so, it is right to mark the alternative d) all of the above.
