The growth in the global ecological footprint since 1961 is largely a result of an increase in global carbon footprint. as fossil fuel combustion has increased, what subsequent change has resulted in the rise of our global carbon footprint?
a.) the land associated with fossil fuel reserves has decreased.
b.) the land required to produce alternative fuels has increased.
c.) the land required to assimilate co2 emissions has increased.
d.) the land required to offset o2 consumption has increased.

When does the circulatory system work with the respiratory system? a. during blood cell formation b. during cellular respiration c. during intestinal digestion d. during a viral infection

Predict the results of a two base insertion or deletion in a strand of dna that codes for a protien, how does this differ from a three base insertion or deletion?

How does upwelling affect coastal fisheries? upwelling damages nutrient supplies at coastal fisheries as the warm, nutrient-rich surface water is replaced by nutrient-poor, cold water. upwelling damages nutrient supplies at coastal fisheries as the cold, nutrient-rich surface water is replaced by nutrient-poor, warm water. upwelling improves the nutrient supply at coastal fisheries as the warm, nutrient-rich surface water replaces the nutrient-poor, cold water. upwelling improves the nutrient supply at coastal fisheries as cold, nutrient-rich water replaces the warm, nutrient-poor surface water.