Answer:
D
Explanation:
I think it is D because its the best answer from all of the above,
The third one is not true
Answer:
From Red Giant to Supernova: The Evolutionary Path ofHigh Mass Stars. Oncestars that are 5 times or moremassive than our Sun reach the red giant phase, their core temperature increases as carbon atoms are formed from the fusion of helium atoms. ... When the core contains essentially just iron, fusion in the core ceases.
Answer: This is because water helps in stabilizing the conformation or structure, flexibility of proteins and their movement or motion.
Explanation: Every protein have a particular conformation at which it functions optimally. A protein's conformation is stabilized largely by weak interactions and these weak interactions occur more favorably in aqueous medium. A given polypeptide chain can assume different conformations. The chemical interactions that stabilize the native conformation include include disulfide bonds, hydrogen bonds, hydrophobic and ionic interactions. Hydrogen bonds and hydrophobic interactions are formed in the presence of water, though they are weak interactions but their cumulative effect in a protein is significant. These weak interactions helps to maintain the conformation of proteins and ultimately their function.
Answer:
The major reservoir for Ammonia is the natural soil, where it is present in abundance.
Explanation:
In soil, ammonia is found in quite abundance, where it is changed into nitrate through a process commonly knows as Nitrification. In the nitrification process, first, nitrite is formed which is followed by its conversion into nitrate by a bacteria known as Nitrobacteria. Finally, this nitrate is consumed by the plants, which are then eaten up by the animals.