Answer:
D- NADH
Explanation:
Nicotinamide Adenine dinucleotide, is a co-enzyme which get reduced with hydrogen atoms from Kreb;s Cycle. Flavin Adenine dinucleotide is another co-enzymes(FADH2),
Generally, NADH2 transports hydrogen atoms into the matrix of mitochondria.
The hydrogen is spit to protons and electrons.
The protons are pumped by the proton motive force(PMF) from the matrix into the intramembrane spaces.
The high concentration of protons sets up electrochemical gradients, which supplies the energy needed for ATPs synthesis by ATPase enzyme, as the proton diffuses down the electrochemical gradient back into the matrix.
Therefore the energy from glucose is inform of NADH, and this has been harnessed , for ATPs synthesis.
The correct answer is option A, that is, there was no life prior to Phanerozoic.
The Phanerozoic eon refers to the eon of visible life. It began about 541 million years ago. It signifies only one by an eighth of the time since the formation of Earth crust took place.
The Precambrian eon is older, and it extends from 4.6 billion years ago to the Phanerozoic eon. The fossils in the Precambrian eon are rare. It was in the late Precambrian eon that the origination of the first multi-cellular species took place.
B! Hope it helps... Have a great day!
The correct answer is option C, A land slide
The very common cause of landslide is the loosening of soils due to the human interventions and activities of construction, grazing or deforestation.
All these processes loosens the soil and thus make the mountains susceptible to land slide events.
Since all these events are caused by a biotic agent i.e human being it is called biotic ecosystem change