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.
The London Marathon, one of the six World Marathon Majors, has been contested by men and women annually since 29 March 1981. Set over a largely flat course around the River Thames, the marathon is 26.2 miles (42.2 km) in length and generally regarded as a competitive and unpredictable event, and conducive to fast times.he London Marathon, one of the six World Marathon Majors, has been contested by men and women annually since 29 March 1981. Set over a largely flat course around the River Thames, the marathon is 26.2 miles (42.2 km) in length and generally regarded as a competitive and unpredictable event, and conducive to fast times.