A meteor is what is seen when a meteoroid enters Earth's atmosphere and becomes visibly bright.
Answer:
(01) D
(02) E,C.
Explanation:
(01) the growing number of people in the cities puts a strain on waste management efforts. If a city cannot effectively cope, this will mean poor management which will strain the condition of our environment further. it can cause diseases especially in poor areas.
Explanation:
Wind energy is one of the sources of renewable sources of energy that is environmentally friendly.
It uses wind power to generate other forms of energy mostly electricity.
Some of the drawbacks are:
- Wind turbines pose serious threat to wildlife. It is common place to see dead birds in areas where wind power is being harnessed.
- The quantity fluctuates from time to time. Since wind is an element of weather, it is not always in regular supply as desired.
- The cost of constructing wind turbines can be very high a times.
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Answer:
The intracellular ratio of NAD+/NADH ratio is expected to be high because NAD+ act as coenzyme during the catalytic activity of various enzymes such as alcohol dehydrogenase.
Explanation:
The ratio of NADP/NADPH should be low that means the intracellular level of NADPH shouls be greater than NADP.It is because NADPH is used in many biosynthesis process such as fatty acid biosynthesis.
On the other hand NADPH is used as coenzyme during the catalytic activity of glutathione reductase.This catalytic activity of glutathione reductase is very much important to neutralize the toxic effect of reactive oxygen species.