Answer:
the first choice
Explanation:
The reason why it is the first choice is because you would need to experiment twice before concluding your experiment one has to be normal height and the second test has to be higher also the mass on the car also is a factor to the experiment.
It has a positive value.
We need the answers that you have to choose from.
Answer:
Retina
Explanation:
they are special type of cells in the eye that picks up photons and then signals the brain. There are to types rods and cones
