Answer:
The chlorophyll inside the plants cells give the plants its pretty, green colour.
The correct answer is option (A) the fossil record.
Coordinated stasis refers to the stasis or the no evolutionary changes in the organisms for millions of years, which is followed by extinction and formation of the new species.
Fossil records have the evidence of ecological and evolutionary stability in the species over a long period of geological time scale separated by intervals of abrupt change. The best example of this being the animals of the Middle Devonian Hamilton group. Thus, fossil record is the only source of record showing this long period of stasis and separated by periods of abrupt changes in the species due to environmental pressures.
Answer:
Explanation:
Helium is the second most abundant element in the universe, but here on earth, it's rather rare. Most people guess that we extract helium from the air, but actually we dig it out of the ground. Helium can be found in certain parts of the world, notably in Texas, as a minor component in some sources of natural gas.
Helium is generated underground by the radioactive decay of heavy elements such as uranium and thorium. Part of the radiation from these elements consists of alpha particles, which form the nuclei of helium atoms. ... Helium can also be produced by liquefying air and separating the component gases
When the gas contains more than about 0.4% helium by volume, a cryogenic distillation method is often used in order to recover the helium content. Once the helium has been separated from the natural gas, it undergoes further refining to bring it to 99.99+% purity for commercial use.
Answer:
The correct option is E.
Explanation:
Protein synthesis in living cells is divided into two distinct stages, which are transcription and translation. Transcription occurs in the nucleus where mRNA is formed from DNA. The mRNA then moved into the cytoplasm, where the process of translation takes place. Translation occurs in 5 stages and the accuracy of this process depend on the bonding of the anti-codon to the codon and the attachment of amino acids to tRNA.
tRNA (transfer RNA) plays a vital role in the translation process. It has very specific structures, which have the ability to bind to specific amino acids at one end and an mRNA molecule at the other end. This arrangement ensures that accuracy is maintained by making sure that each amino acid is carried to the appropriate point in the protein that is been synthesized based on the information in the mRNA.
