All of the following are possible sources of error in a scientific investigation except for
a. not being able to complete all trials of an experiment
b. recording experimental data incorrectly
c. measuring materials such as mass and volume incorrectly
d. having a constant in your experiment

The correct answer is option D. Having a Constant In Your Experiment.

The errors in the scientific experiments can occur due to many reasons. The main reason of any error in the scientific investigation is the experimental errors, which include the errors during the data collection and performing an experiment.

Having a constant in an experiment is not a source of error. Constant helps in study the effect of other variables, which are being tested.

i do not know and i have a 100 in this class

answer by yourhope:

hi! : )

in which structure in the nucleus are ribosomes made?

b) nucleolus!

: )