The right answer is B.
Cholera vaccination is only recommended for staff who have to intervene with patients in an epidemic situation. In all other cases, effective prevention is provided by good personal hygiene (washing hands) and food.
It is also important to know that this vaccine does not protect permanently: It protects only about 90% within 6 months, then to 50% within 3 years.
Answer:
produce energy without using fossil fuels.
Explanation:
People can use renewable energy sources, such as solar and wind power. Renewable energy sources help reduce acid rain because they produce much less pollution.
Answer:
The limitations that nerve impulses have are
Explanation:
1). The impulses can move only in one direction.This is because the nerves are structured to allow unidirectional flow.
2). The electrical impulses are quite short acting. The message is only sent in the presence of the stimulus.
The stimuli sends a message to the brain
Hope this helps
