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The helmet and watching out while using hand signals all point to safety rules. there for the answer is Protection
Answer:
Prince Henry had several reasons for dispatching his expeditions. This is because he was interested in finding the <em>christian allies </em>as well as <em>gold</em>.
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<u>Answer:</u>
<em>Earthworms are very sensitive towards the odor. </em>
They use it for locating the food in the soil. Because earthworms are dependent upon microorganism in the soil, they must be sensible for the <em>presence of any food around them if they do not respond the odor then they may die. </em>
Earthworms have the escape response so they quickly respond the external stimuli at the part they are stimulated. <em>With the increasing frequency of stimuli at the same part they slowly decrese the response towards it.</em>