7)
this gas is found in the stratosphere where it protect us from uv radiation.
a) ozone.
b) oxygen.
c) nitrogen.
d) carbon dioxide.

The answer is Ozone

Explanation:  The ozone acts like a filter for shorter wavelength  and highly hazardous  uv light. It protects the life on earth.

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .

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