All of the black bears in a cave make up a group.
At some point in their life cycle, all chordates have a postanal tail, __Notochord ____, hollow nerve cord, and ___Pharyngeal slits___.
<h3>Chordates </h3>
Chordates are animals belonging to the phylum chordata they include vertebrates, lancelets and tunicates of which vertebrates are the most common. As they develop throughout their life time they posses certain characteristics at some point and they are;
- Postanal tail
- Notochord
- hollow nerve cord
- Pharyngeal slits
Hence we can conclude that At some point in their life cycle, all chordates have a postanal tail, __Notochord ____, hollow nerve cord, and ___Pharyngeal slits___.
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<span>Apart from the plants and algae which are well-known to be able to perform photosynthesis, other organisms capable of doing so are some specific species of bacteria especially those which contain the green pigments called chlorophyll necessary for photosynthesis. These bacteria are also capable of absorbing carbon dioxide.</span><span />
Answer:
Chemogeny may be a theory of chemical evolution that depends on the chemical reactions and formation of drugs on the bases of chemical reactions. This theory says that “Life occurs as a results of evolution of inorganic matter”.
In the 1920's Scientists Oparin and Haldane, developed this hypothesis of the chemical origin of life from the primitive atmosphere of the world having matter like methane, ammonia and water. there have been very low concentrations of oxygen thanks to the presence of high temperatures like 5000-60000C. So, these conditions weren't suitable for the free existence of organic compounds, so reactions started happening .
Under conditions like high sunlight and warmth , inorganic matter gets converted to inorganic compounds. And this might end in the storage of organic compounds, which gets more and more concentrated with the passage of many years.
These compounds interact with one another and end in “life”.
So, chemogeny is that the process of chemical evolution of earth and formation of life from pre-existing matter with the assistance of chemical reactions.
Explanation:
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Answer:
science or scientist?
Explanation:
Destructed environment
Lack in gov. funding
Out of use technology (outdated)
