Activity In thís activity, you'll review data on the population of squirrels and analyze trends in the data.
This empty table represents the space available in a small forest area. Each block represents the minimum amount of living
space for 70 squirrels.
Now review the data in this table. It shows the actual population of squirrels in the forest over a period of 10 years.
Population
70
125
350
875
1,400
1,575
1,715
1,750
Year

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.