Answer:
vaccination
Explanation:
The vaccination has been one of the most revolutionary inventions in the medical field. This invention helped protect people from numerous diseases, some being totally neutralized, while some having only minor effects on the human body. The vaccination basically is a way of enhancing the immune system of the body by injecting in it a weakened form of the pathogen. In this way, the weakened form of the pathogen is not capable to harm the body, and the body is not fighting against it, but instead the pathogen becomes part of the body and its defense mechanism, so when the pathogen strikes, the body has a counter attack and defeats it.
Answer:
C. Sunlight penetrates to greater depths in land than water
Explanation:
Water is a poor conductor of heat which is why it takes much longer for water to conduct heat than it does land.
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The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
Answer:
Sam is correct. It is a chemical change and the contents should be in D. for compound.
Explanation:
This answer is correct because I just took the USA test prep
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Answer:
the cells of all organisms in the domain eukarya contain a nucleus
