Flatworms can be cut in half, creating two new individuals, by . fragmentation
binary fission
multiple fission
budding

Fragmentation

Explanation:

The process of fragmentation is indeed the process of breakage of an organism into various fragments that over time gets developed into a complete organism. Thus, this process is also referred to as the process of splitting.

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products