Over the past 20 years, the major pollutants in our world have
a. decreased significantly
b. increased significantly
c. stayed at the same levels
d. decreased slightly

b. increased significantly

Explanation:

Over the past 20 years the pollutants concentration in the atmosphere, hydrosphere and lithosphere are increasing considerably. This is due to increase in burning of fossil fuels, deforestation, generation of large volume of biodegradable and non-biodegradable wastes. Thus these factors contributing to the overall increase in the pollution level worldwide.  

well

explanation:

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.