Which would likely live in a bog, a sewage treatment plant, or a cow’s intestine? a) methanogen b) halopile c) thermoacidophile d) eubacteria

A). Methanogen  

Methanogens are anaerobic unicellular microorganisms. They belong to the domain archea. They are found in anerobic environments like swamps, bogs, sewage sludge, marshes and also in the rumen part of the intestines of the cattle. They use hydrogen, carbon dioxide, acetate, formate and methanol to produce methane and heat as a result of anaerobic fermentation. Their main function is the removal of excess of hydrogen and the fermentation products. The release of the methane to the atmosphere contributes to the carbon cycle.

ecotourism pay for conservation efforts.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.