The scientists rely on the following cues to hypothesise and test for the presence of life on various extraterrestrial bodies:
1. Presence of water
2. Presence of hydrocarbons
3. Presence of carbon
4. Presence of salt pans
The presence of hydrocarbons may indicate that there's anaerobic life thriving beneath the surface of the meteorite. The presence of traces of carbon may indicate that there was life once thriving on its surface ( which however is not possible in case of a meteorite because of its size). The absence of any of the above listed items will indicate that the surface of the meteorite is devoid of any life.
<span>Nearly all nutrients present in tropical rainforest forests are contained in the (soil)</span>
When the moon gets between the earth
Based on our understanding, we can confirm that the structures that comprise the outer ear include the tragus, helix, and the lobule.
<h3>What is the outer ear?</h3>
Contrary to that of the inner ear, the outer ear includes the parts of this organ that do not actually influence our ability to hear. These parts include the components of the ear that we are able to see on an everyday basis, separated into three distinct parts named the tragus, helix, and lobule.
Therefore, we can confirm that the structures that comprise the outer ear include the tragus, helix, and the lobule.
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