Which of the following statements about the physical geography of north america is true?
a. the mississippi drainage basin is the fifth largest in the world.
b. the largest tributary of the mississippi is the arkansas river.
c. the most geologically active region of north america is found along the west coast.
d. the ancient rock of the canadian shield covers about one-fourth of canada.

What are the similarities and differences in the way geologists and biologists approximate the age of the earth? justify your response in two or more complete sentences.

Rainbow trout is non- native to the united states. however this species is breeding with the native gula yltrout acientistrecently observed that the hola trout were becoming exitinct what is the cause of their extinction

Paraguay is one of the only two countries in the americas that don't have a coastal border. the country is slightly smaller than california. it was under a military dictatorship for 35 years, ending in 1989; today it is a constitutional republic. most of the population is roman catholic, and over 60% of the people live in cities. its environment is threatened by deforestation and water pollution. which of the following facts from the paragraph above best describes an element of paraguay's culture? (apex)