Answer: Experience 1 is the one that has the greatest reliability.
Explanation: Because of this potential variation, biological experiments need to have a large sample size and preferably be repeated several times. With more samples and repeating the experiment more often, the probability of arriving at a wrong conclusion due to random variation is diminished. As experience 1 has had several repetitions, it is the experience with a more reliable result.
The correct choice is velocity=distance/time of v=d/t
An ectotherm gets its heat from external sources
(Remember "ecto" means outer, "endo" means inner)
A downhill skier traveling down a hill has a large amount of kinetic energy because of their mass and high velocity.