Correct answer:
A vaccine is a substance that stimulates the antibodies production and helps to provide immunity against one or more than one disease. It is made by taking a small amount of dead or whole weaned germs such as bacteria or virus that cause the disease.
When these weakened pathogens are introduced in the body they evoke the immune response inside the body and activates T- cells and B-cells inside the body, which prepare antibodies against that antigen in advance in order to save the body from infection by the same pathogen in the near future.
A vaccine introduces a weakened flu virus into the body
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The immune system identifies antigens on the weakened flu virus
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Antibodies are produced, which bind to the weakened flu virus and signal immune cells to destroy it
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The actual flu virus enters the body, and lymphocytes recognize the antigens
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Antibodies are quickly produced and allow the body to fight off the infection
I think it’s thick
Explanation
Movable-type printing was the invention in the 1400’s revolutionized the way knowledge could be spread.
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What is Movable-type printing?</h3>
This type of printing involves the use of movable components to reproduce elements and letters on paper.
This was adopted by churches through printing of bible and other religious materials and led to the protestant reformation in the 1400s
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1. Flowers must rely on vectors to move pollen. These vectors can include wind, water, birds, insects, butterflies, bats, and other animals that visit flowers. We call animals or insects that transfer pollen from plant to plant “pollinators”.
2. Germination:When a seed falls on the ground, it needs warmth and water in order to germinate; some seeds also need light. Dicots have seed coats that soften with moisture. After being planted in the soil for a few days, the seed absorbs water and swells until the seed coat splits.
For 36 is species because there a lot of jellyfish species and that the only one i know srry <span />