Answer:
it was a SEA STACK.
Explanation:
A sea stack is formed from cliffs. It is a part of the cliff that breaks off from the original structure because its connecting portion will erode and be gone due to weathering and constant barrage of waves on the cliff sides.
Answer:
There is a need to transform the accumulation of acetyl-CoA into the ketone bodies, as one knows that acetyl-CoA is both labile and possess an enormous amount of energy. Hence, acetyl-CoA due to its unstable characteristic is not ideal for circulation within the tissues, and at the same time, the compound acetyl-CoA does not possess the tendency to pass through the cell membrane.
Due to these reasons, the conversion of acetyl-CoA into the ketone bodies is done, the ketone bodies also act as an alternative source of energy. The ketone bodies work as water-soluble correspondents of fatty acids. The production of ketone bodies generally takes place within the liver cells' mitochondrial matrix. The three forms of ketone bodies are beta-hydroxybutyrate, acetoacetate, and acetone.
The production of ketone bodies by the liver cells helps the cells of the brain at the time of starvation, as the brain cannot use fatty acids as an energy source, as the fatty acids cannot pass through the blood-brain barrier.
The main difference between a prokaryotic and a eukaryotic cell is the absence of nucleus in the prokaryotic cell and its presence in the eukaryotic cell. The genetic material of the prokaryotic cell is not inside the membrane. On the contrary, the eukaryotic cell has genetic material inside the nucleus. Also, eukaryotes have linear chromosomes while prokaryotes have circular chromosomes.
Answer:
The correct answer is option a, that is, it is a kind of natural selection.
Explanation:
A procedure of speciation in which the phenomenon of natural selection enhances the reproductive isolation amongst the population of two species is known as reinforcement. This takes place as a consequence of selection functioning against the generation of hybrid entities of low fitness.
The concept was developed originally by Alfred Wallace, also considered as the Wallace effect. Reinforcement signifies towards some of the circumstances in which selection can encourage an enhancement in prezygotic isolation, affecting the procedure of speciation straightforwardly.
Answer:
The fossils found in deeper layers of rock are older.
Explanation:
This is because as the years go by more rock accumulates covering old fossils and creating space for new ones. The older fossils are then found in deeper layers of rock because of the newer layer that cover it.