Plants use direct environmental stimuli for orientation in growth and movement. This is called tropism. The responses of the plant may be toward (positive) or away (negative) from the external stimulus or stimuli.Click the links below to learn more about the different types of stimuli and the plants reaction to it:Phototropism-Reaction to light and different wavelengths.his is called tropism. The responses of the plant may be toward (positive) or away (negative) from the external stimulus or stimuli. Click the links below to learn more about the different types of stimuli and the plants reaction to it:
I'm thinking about training for a marathon. A marathon is 26.2 miles or 42 kilometers. Although some marathons differ in their terrain (some are very flat, some are extremely hilly) and degree of difficulty, the distance is always 26.2 miles.
So, a generic long run for someone who's goal marathon pace is 7:00 per mile might be that the first 12 miles of a long run will be at 7:30 to 8:00 per mile, then the pace over the last 6 miles will average 7:00 per mile with the last couple of miles at 6:15 to 6:30 pace and the last 400 meters very fast. say 'fast' because you will gradually increase to a faster and faster pace so that you finish the run running nearly as fast as you can for the last few miles. I learned this from Gabriele Rosa (arguably the world's greatest marathon coach).