Megacity would probably have the biggest affect on the immediate environment and possible the outlands of the megacity as well.
Answer:
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Explanation:
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Answer: The correct answer to the question is option D
ISCHEMIC HEART DISEASE.
Explanation: To answer the question effectively, let us look at the options given,what they are and how they affect the heart.
Endothelial cells play a crucial role in the regulating vascular tone,They do so by secreting variable amounts of constricting and relaxing factors inorder to control tissue perfusion.
Hypertension on the other hand occurs as a result of factors that varies distinctively and not all related to vascular tone.
Dysrhythmias on it's own will affect the function and conduction of heart chambers but not necessarily vascular tones.
Truncus arteriosus results in only in one large artery exiting/leaving the heart.
You can work out the concentration of H+ ions (denoted as [H+]) easily on a calculator if you know the pH, which you do. The easiest way to work out [H+] is to do

. In your case, the maths here would be

, which gets you an answer of 1.58x

, or 0.000158. For 6.2 it would be

, which gives you 6.31x

, or 0.00000063. As you can see, the concentration of H+ ions is greater in pH 3.8.
To put it simply, the [H+] decreases the higher up the pH scale you go, and increases as you go lower, but now you know the maths to work it out for yourself too.
The rate of oxygen production is greatest in section M is the statement which supports the data in the graph
Explanation:
The data in the graph which plotted the rate of photosynthesis against temperature gradient shows that point M represents the optimal temperature where the rate of photosynthesis was the highest.
This was because the enzymes that take part in photosynthesis are efficient with an optimal rise in temperature leading to an increased rate of photosynthesis which in turn results in increased oxygen production.
When the temperature is lower than optimal, the enzymes are inactive or less active resulting lower rate of photosynthesis.
At the same time, when the temperature is increased beyond the optimal temperature, they get denatured or destroyed and the rate of photosynthesis drops down.