Zit sure has to be B. Pollution
Answer: The lock-and-key mechanism is usually associated with the complementary shapes of an enzyme with a single substrate wherein the lock that is being referred to is the enzyme and the substrate is the key. One right sized substrate (key) fits into the active site (key hole) of the enzyme (lock).
Albedo (al-bee<span>-doh) is a measure of how much light that hits a surface is reflected without being absorbed. Something that appears white reflects most of the light that hits it and has a high albedo, while something that looks dark absorbs most of the light that hits it, indicating a low albedo.</span>
Solid- Ice: 0 degrees celcius
Liquid- Water: Room temperature
Gas-Steam: 100 degrees celcius
hope this helps :)
