21_______________ is the average atmospheric or weather conditions in a given region during a time frame of several decades to thousands of years.
32Wind is an indirect form of ____________________ energy.
43The highest solar energy input is at ____________________.
54____________________ help redistribute heat from the sun, thereby influencing climate and vegetation, especially near coastal areas.
65A desert is an area where ____________________ exceeds ____________________.
76____________________ occur in the interiors of continents in areas too moist for deserts and too dry for forests.
87Global warming has caused the melting of ____________________ in the tundra, with the release of methane and carbon dioxide, both greenhouse gases.
98Tropical savannas in East Africa have herds of ____________________ and ____________________ hoofed animals.
109Temperate shrubland, or chaparral, is found along the coastal regions of ____________________ in the United States, the Mediterranean Sea, central Chile, southern Australia, and southwestern South Africa.
1110Soil nutrients are remarkably sparse in the ____________________, considering the overall high levels of biomass.
1211Vegetation layers in the tropical rain forests are structured mostly according to plants' need for ____________________.
1312Because of a slow rate of ____________________, temperate deciduous forests have nutrient rich soils.
1413Boreal forests are composed of a few species of coniferous evergreen trees with small, needle-shaped leaves. These trees can withstand the intense cold and ____________________ of winter.
1514Climate and vegetation vary with both latitude and _______________.