Scientists estimate that rain forests account for over half of the world's plant and animal species. Yet there is a concern that tropical rain forests are disappearing at an alarming rate. How has the disappearance of tropical rain forests changed in recent years?
A. In recent decades, tropical deforestation has not only slowed significantly, but also reversed as governments have established reforestation policies to replace lost forests.
B. In recent decades, deforestation has declined significantly throughout the world and is now concentrated mainly in tropical regions.
C. As tropical forests have declined, the rate at which these forests are cleared is accelerating everywhere in the world.
D. In some countries, such as Brazil, the rate of deforestation has declined over the last several decades. However, even at the current rate, tropical rain forests could be completely eliminated from Earth within 25 years.
D. In some countries, such as Brazil, the rate of deforestation has declined over the last several decades. However, even at the current rate, tropical rain forests could be completely eliminated from Earth within 25 years.
You might also like to view...
The enzyme complex associated with DNA in the figure above is _____
A) helicase B) DNA polymerase C) RNA polymerase D) topoisomerase
List the three meninges in order from the surface of the brain to the inside of the skull.
What will be an ideal response?
A condition in which one gene pair masks the expression of a nonallelic gene pair is called ________
A) dominance B) additive alleles C) codominance D) epistasis E) recessiveness
Glucose plus fructose forms a disaccharide called ______.
A. maltose B. starch C. sucrose D. glycogen