it cause global warming which heats up the atmosphere and most animals in colder areas there homes are melting because of fossil fuels?
<span>How the inside of a greenhouse works.
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<span>Putting your wet shoes on a floor vent to dry them faster
</span><span>Macaroni rising and falling in a pot of boiling water</span>
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Answer:
sorry i dont know i just put this to get points to ask my question im really sorry
Explanation:
Answer:
Option D, Gastric Juices
Explanation:
The second line of defense is a non specific defense mechanism in which no specific individual is targeted but all invaders are killed in general way. Some common mode of second line of defense are - Phagocytic cells (white blood cells), inflammatory responses, macrophage system etc. The second line of defense comes into action when the invader has surpassed the first line of defense which include either physical barrier like skin, mucous membrane, hair, cilia etc. or chemical barriers like gastric juices, saliva, Hyaluronic acid etc.
Hence, gastric juice does not belong to second line of defense.
Thus, option D is correct.