Which of the following countries produces the most greenhouses gases
a: egypt
b: france
c: united states
d: greenland

The health, management and conservation of biodiversity, is a challenge facing ecosystems worldwide. the major factors that affect the health and function of the great barrier reef are climate change and pollution. which question investigates the effects of a biotic factor on the reef ecosystem?

Injuries in the environment are a result of

What are the characteristics of subsystem