Question

which two are considered constants for this experiment?
size of the boat
boat kept in the same environment
paint with additive
rewatch
submit

Explanation:

Constants in an experiment are factors that are kept the same throughout. The size of the boat and keeping the boat in the same environment are likely to be held constant to isolate the variable effect of the paint with additive.

Answer:

Size of the boat, Boat kept in the same environment