Answer:
In science a hypothesis is useful only if it can be <u><em>tested</em></u>.
Explanation:
In a scientific experiment, a hypothesis can be described as a tentative experiment that can be tested through observations and experimentation. The results inferred from the experiments can prove whether a hypothesis was correct or wrong. Hence, a hypothesis is a very important part for the scientific method of research. The validation of a hypothesis through experimentation brings about theories, facts, laws etc. A hypothesis is made in response to a scientific question.
Any infectious diseases can be prevented by vaccinations
<u>Explanation:</u>
- Vaccines defend against infectious diseases that cause severe illness and seldom death.
- It prevents disease in somebody who receives them and protects those who get into contact with unvaccinated individuals.
- Vaccines include the corresponding antigens or parts of it that cause illnesses, but the antigens in vaccines are either destroyed or incapacitated.
- When they are introduced into fatty tissue or muscle, vaccine antigens are not powerful enough to generate the symptoms and signs of the disease but are tough enough for the immune system to build antibodies against them.
A, a , b, a is ur answers
The nucleus controls everything in a cell
