Because if you don’t you may die or get seriously hurt. Or just the investigation will go wrong and get unclear or wrong answers
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).
B. Bacteria
The bacteria break the dead leaves down and release the nutrients back to the soil.
There could be an earthquake.
