Electrical stimulation of the brain (esb) is used on humans during brain surgery to map out a. nerves and neural pathways b. impulses and nerve functions c. blood flow and mental activity d. the brain and critical structures

Many organs are involved in the processes of keeping the blood and the body clean. when poisonous or harmful substances are in the blood, they are absorbed by the and released in a less harmful form. when wastes are present in the blood, they are filtered out and removed from the body by the

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.

This group of organisms perform the process of ammonifcation. a. herbivores b. decomposers c. carnivores c. plants