<h2>Answer:</h2>
There is a whole history behind the evolution of homo sapiens. With regards to the data given here we can classify the species in upright human manner in this following way;
- H. Erectus
- A. Afarensis
- H. Neanderthalensis
- H. Sapiens
- A. Africanus
- H. Habilis
Tolerance towards cold temperature and adaptabilities are the variation that help the trout fish to survive.
<h3>Which factor help the trout to survive?</h3>
If temperatures fall over time because of climate change, the tolerance towards cold temperature is the one variation that would likely help the trout to survive because only those organisms survive in cold temperature that have good tolerance and various adaptation towards cold temperature.
So we can conclude that tolerance towards cold temperature and adaptabilities are the variation that help the trout fish to survive.
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The bonds between amino acids are PEPTIDE chemical bonds (Option B).
<h3>What is a peptide bond?</h3>
A peptide bond is a special type of chemical bond between adjacent amino acids in a polypeptide chain.
Peptide bonds are known to be formed by a chemical process called dehydration synthesis.
In conclusion, amino acids bind by PEPTIDE chemical bonds (Option B).
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Answer:
Euglena is a single celled organism. It belongs to Kingdom Protista. Euglena is a eukaryotic organism that exhibit characteristics of both plants and animals. Some species of Euglena are photoautotrophs like plants which means they have ability to trap sunlight to produce food by the process of photosynthesis. Whereas, some species are heterotrophs like animals which means they obtain food by feeding on other organisms.
If scientists remove all of the chloroplasts from a Euglena, it will not be able to perform photosynthesis because chloroplast is an organelle that contains light sensitive pigments named as chlorophyll. Chlorophyll traps light energy from sun. Sunlight energy, along with carbon dioxide and water produces food in the form of glucose in plants and other photoautotrophs.