The planet neptune is, on average, about 4.5 billion km from the sun. how long does it take light from the sun to reach neptune? (recall that the speed of light is about 300,000 km/s)

Write a 150-word essay describing the effect of people's activities on the environment in the region.

What is the difference between the cultures of central asia and the caucasus region? the majority of people in central asia are muslim; the majority in the caucasus region are christian. the primary language in central asia is armenian; the primary language in the caucasus region is russian. central asia has been plagued by ethnic unrest; the caucasus region has had little ethnic conflict. the effects of soviet rule can still be seen in central asia; the caucasus region has developed its own identity since the fall of the ussr.

Read the article about the fraser river, one of the most important rivers in canada. what is the most important species of fish in this river? why are the numbers of these fish declining?