Answer:
Pretty sure they're both A.
Answer: i would say the core then its the mantle then the crust
Explanation: hope this helps
Answer:
When it stands the test of time and is supported by many experiments.
Answer:
1. mutation and genetic recombination
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.
