Water birds are the only kind of bird that eat fish. true or false

That is False many birds such as Eagles which are not water birds eat fish

The answer is false a lot of other kinds of birds eat fish.

Adding the numbers 26.45 and 2.55 normally will give an answer of 29. The rule on significant figures on operations involving either subtraction or addition states that the final answer should be rounded to the least number of decimal places among the addends. In the example above, the least number of decimal places is 2. The answer of the addition should be 29.00 which has four significant figures. 

Therefore, the answer is four.