6 is the answer
hope this helps
Hydrochloric acid causes the food to break down.
Answer:
Blood-brain barrier.
Explanation:
Blood brain barrier may be defined as the barrier between the blood capillaries and the component of the brain tissue. This blood brain barrier provide protection against the pathogens present in the blood.
The blood-brain barrier uses tight junctions that prevent the entry of microbes in the underlying tissue. The tight junctions allows only the entry of some selected particles and prevent the entry of other particles.
Thus, the correct option is (3).
Answer:
wind, water, animals, explosion and fire are the agents of seed dispersal.
<h3>Hope it will help you. </h3>
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