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The temperature of the Earth's crust ranges considerably. At its outer edge, where it meets the atmosphere, the crust's temperature is the same temperature as that of the air. So, it might be as hot as 35 °C in the desert and below freezing in Antarctica
Acids and bases determine pH. Acids have pH 0 -7 while bases have pH 7 -14. Enzymes function within a very narrow optimum range of pH.
Different enzymes have different optimum pH values. This is the pH value at which the bonds within them are influenced by H+ and OH- ions in such a way that the shape of their active site is most complementary to the shape of their substrate.
Extreme changes in pH above or below the optimum as caused by strong bases and acids can cause the weak linkages e.g. hydrogen bonds in the enzyme's protein molecules to break permanently resulting in denaturation of the protein and impairing its functions because the enzyme can no longer conform its active site to complement that of its substrate and therefore no reaction can take place.
Answer:
If the Earth weren't tilted on its axis, there would be no seasons.
Explanation:
humanity would suffer. When a Mars-size object collided with Earth 4 billion years ago, it knocked off a chunk that would become the moon.
31 pairs
Spinal nerve, in vertebrates, any one of many paired peripheral nerves that arise from the spinal cord. In humans there are 31 pairs: 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal. Each pair connects the spinal cord with a specific region of the body.