1. an advantage of good cardiovascular fitness is a large cardiovascular output less rest between heart beats a faster heart rate a smaller stroke volume 2. when jane exercises, her duration relates to how intense the exercise is how aerobic the exercise is what her resting heart rate is how long the exercise lasts 3. your target heart rate range tells you when you are physically fit performing muscular fitness activities performing cardiovascular fitness activities outside a safe exercise intensity level

When a freind is not tellig you everything you should a: bug them till they tell you b: ask them polietly to tell you c; stay silent your whole life d leave them they will tell you on there own time

You isolate an infectious substance capable of causing disease in plants, but you do not know whether the infectious agent is a bacterium, virus, viroid, or prion. you have four methods at your disposal to analyze the substance and determine the nature of the infectious agent.i. treat the substance with enzymes that destroy all nucleic acids and then determine whether the substance is still infectious.ii. microscope.iii. culture the substance on nutritive medium, away from any plant cells.iv. treat the sample with proteases that digest all proteins and then determining whether the substance is still infectious.if you already know that the infectious agent was either bacterial or viral, which method(s) listed above would allow you to distinguish between these two possibilities? a) ib) iic) ii or iiid) iv

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