tom simplified an expression in three steps, as shown:

which is the first incorrect step and why?

step 1, all the exponents are increased by 4
step 2, the exponents of the same base are added during multiplication
step 3, the exponents of the same base are subtracted during division
step 3, all the exponents are added during division

Step 1) is incorrect.

Step-by-step explanation:

the highest percentage for deaths in construction from highest to lowest is as follows: falls, struck by objects, electrocution, and caught-in/between. these four are collectively known as fatal four.

in the case of falls, the type that is responsible for the overall highest death in the category is falls from roofs.