Answer:
Due to presence at early days of the planet.
Explanation:
We only find the remains of single celled organisms in the oldest fossils because the single celled organisms are the organisms that were present in the early days of this planet. These single celled microbes were present about 3.7 billion years ago while on the other hand, the oldest rocks are only a little older i. e. 3.8 billion years so these single celled organisms are considered as oldest fossils on this planet.
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The factors that contribute to the dehydration in older
patients are the following;
-
Decrease in the thirst mechanism
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The inability of holding a glass or a cup
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Presence of confusion as well as disorientation
These are the factors in which could be seen in identifying
a dehydrated individual
