A salad is a mixture but h2o is a mixture of molechules
Observation, hypothesis, experiment is the correct answer
This answer would be a blood vessels
Climax (the most exciting or plot changing event)
In general, three points A, B and C are collinear if the sum of the lengths of any two line segments among AB, BC and CA is equal to the length of the remaining line segment, that is, either AB + BC = AC or AC +CB = AB or BA + AC = BC. This is from google so make sure to paraphrase
