Amoebas and euglenas can protect themselves from unfavorable conditions with a cyst
spore
vacuole
asci

Option A.

Explanation:

During the unfavourable conditions, Amoeba FORMS A CYST which help Amoeba to protect it from adverse conditions or environment.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

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