Answer:
The type of food Bob is given.
Explanation:
An independent variable in an experiment is the variable that is changed. Here, the type of food is the only thing that is changed and the amount of water, temperature and other variables were kept constant (same). Thus, the independent variable is the type of food Bob is given.
Answer:
The rock must be eroded into sediment
Explanation:
In order to form sedimentary rock, the accumulated sediment must become compacted and cemented together.
