Examlex
Of the total energy that is intercepted at Earthʹs surface and available for work,about 25% is fixed by photosynthesis as carbohydrates in plants.
Q1: Human caused eutrophication is known as<br>A)anthropotrophication.<br>B)oligotrophication.<br>C)cultural eutrophication.<br>D)mesotrophication.
Q27: On Earth,the Sun passes directly overhead at
Q46: Soil is composed of 70% mineral matter,5%
Q50: A resilient species or ecosystem is one
Q62: The solar constant is measured at<br>A)the thermopause.<br>B)the
Q113: Three criteria used for classification of the
Q159: The ozone hole has almost completely recovered.
Q168: Earthʹs spherical shape is not a factor
Q191: Which of the following relationships is INCORRECT?<br>A)December
Q263: The Sunʹs height in the sky above