Internet polling methods are problematic because they have a high likelihood of what type of error?

Mr. mann's science students were experimenting with speed. they set up a 1 meter (100 cm) track. the students used balls instead of cars. the balls were different sizes and made of different materials. four at a time, students rolled balls around the track to see which had the fastest and slowest speeds. some of their data are shown in the table. which ball will take the longest to complete one lap around the track?

3. suppose most animals behaved in a certain way. would that provide evidence that it is natural for us to follow their lead? if so, what implications would this have for natural law theory? .

Which of the following policies can the government use to encourage entrepreneurship?