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Georgia [21]
3 years ago
11

What are the oldest life forms on earth

Biology
2 answers:
katen-ka-za [31]3 years ago
8 0
The earliest time that life forms first appeared on Earth is unknown. They may have lived earlier than 3.77 billion years ago, possibly as early as 4.28 billion years ago, not long after the oceans formed 4.41 billion years ago, and not long after the formation of the Earth 4.54 billion years ago.
rosijanka [135]3 years ago
4 0
Trees, almost all of them are ancient.
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Answer:

The correct answer will be option-B.

Explanation:

The patellar tendon reflex is the kicking movement of the lower leg in response to the tap on patellar cap used to test the L2, L3, and L4 segments of the spinal cord in the body.

The spinal cord interacts with muscles through muscle sensors called muscle spindle which signals after the stretching of the muscle. The signals are sent to the spinal cord through afferent neurons or sensory neurons which starts the reflex action to prevent overstretching of the muscle.

Thus, Option-B is the correct answer.

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4 0
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What's the difference in concentration of hydronium ions between pH 1 and pH 4?
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3 years ago
What is the term for the amount of a species that can live in an area with the resources that are available?
Arturiano [62]

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