Different species can interact in interesting ways. one type of grass produces the toxin ergovaline at levels about 1.0 part per million in order to keep grazing animals away. however, a recent study27 has found that the saliva from a moose counteracts these toxins and makes the grass more appetizing (for the moose). scientists estimate that, after treatment with moose drool, mean level of the toxin ergovaline (in ppm) on the grass is 0.183. the standard error for this estimate is 0.016

On the way home from visiting his family, vincent’s plane cruised at an altitude of 3.2 × 10^4 feet. he had heard that a man named felix baumgartner skydived from an altitude of 1.28 × 10^5 feet. vincent wants to know how much higher felix went on his skydiving trip. question 1 you have already seen how adding numbers works in either scientific notation or standard notation. but can you subtract numbers in scientific notation and get the same results as subtracting in standard notation? to find out, first solve vincent’s problem in standard notation. part a write the cruising altitude of vincent’s plane in standard notation.