These preparations are called Vaccines. <span>A </span>vaccine<span> is a biological preparation that
provides active acquired immunity to a particular disease. A </span>vaccine<span> typically contains an agent that
resembles a disease-causing micro-organism and is often made from weakened or
killed forms of the microbe, its toxins or one of its surface proteins</span>. I
am hoping that this answer has satisfied your query and it will be able to help
you in your endeavor, and if you would like, feel free to ask another question.
Answer:
Pteridophytes are vascular plants but they do not produce flowers and seeds which mean their source of reproduction is unknown or hidden.
On the contrary, Spermatophytes as the name indicates, are seed bearing plants. They produced seeds and flowers. Examples are flowering plants, cactus, leather flower, buttercup and may more.
Explanation:
1. B 2. C 3.A 4. A molecule is when two or more atoms join together. An element makes up the atoms that form molecules. 5. Similarities include both are cells and each cell are surrounded by cell membranes. 6.A fish is an organism and a rock is not because fish contain the characteristics needed for life, while a rock does not.
Answer:
c) A study of how disease rates vary among different population groups
Explanation:
Epidemiology is the systematic and scientific study of the distribution of the health-related issue in a specified population.
The Epidemiologists studies the disease and its cause in a population by the collection of the data which gives an insight in the distribution of the health issues in the population living from a small area like school to a country.
The epidemiological studies help the society by reducing the risk of the negative health outcomes, in spreading awareness about the health issues and in framing the health policies.
Thus, Option-C is the correct answer.
Answer:
c
Explanation:
Electrical power is the correct answer
