Which of the following events is most like the formation of a cloud?

A) water running off a roof
B) water forming on a cold object on a hot, humid summer day
C) water entering the air from the leaves of growing plants
D) water moving downward into the soil after a summer rain storm

The primary focus of the International community on environmental problems has been the development of various international environmental laws and non-binding declarations called conventions.

Voluntary simplicity is a form of environmentally ethical consumption.

How did an oxygen-rich atmosphere develop from a carbon dioxide-rich atmosphere?

A) Through photosynthesis by cyanobacteria
B) Through volcanic eruptions
C) Through asteroid impacts

Which of the following is an outcome of human activities? 

A)  an increase in large open-ocean fish such as tuna and sharks 
B)  introducing fish species that have enhanced native species 
C)  large catches of non-targeted species 
D)  bountiful cod stocks

Sackville Waterfowl Park is located in ____________________,New Brunswick.

What is characteristic of an autotroph? 

A)  It might eat heterotrophs. 
B)  It is known to be a decomposer. 
C)  It can live without heterotrophs. 
D)  It cannot photosynthesize.

Which statement best describes the effects of conservation tillage compared to conventional tillage? 

A)  Conservation tillage requires increased use of herbicides. 
B)  Conservation tillage reduces fuel and tillage costs. 
C)  Conservation tillage accelerates water loss from the soil. 
D)  Conservation tillage causes soil compaction.

___________________ is a body of unwritten rules and principles derived from thousands of past legal decisions,along with commonly accepted practices,or norms.