What impact does colonisation have on the colonised?

The probability of committing a type i error is equal to which of the following? significance level, α type i error type ii error p-value alternative hypothesis

Let r(t) represent the rate, in square feet per minute, at which a groundskeeper is mowing a lawn t minutes after 3 p.m. what expression represents the area, in square feet, of the lawn that is mowed between 3 p.m. and 5 p.m.?

How many neutrons does an element have if its atomic number is 40 and its mass number is 156?