What is the Green Revolution? What have been its limitations and its gains?
What will be an ideal response?
The Green Revolution was the implementation of the technologies (described in Question 1) developed in the industrialized world to increase agricultural productivity. The Green Revolution was dependent on the development of crop varieties that would produce more food. This led to selecting plants that partitioned the energy captured from the Sun differently than normal. Plants with less root material, less vegetative material, and more seed material were chosen for breeding. This selection process resulted in the need to increase herbicide use: weeds would compete more effectively for sunlight. These new plants also had an increased need for fertilizer and irrigation because the root system was less extensive.
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Which of the following is considered a reason for the howling of wind on a blustery night?
A. snowflakes striking one another but not sticking together B. eddies of higher air density C. variation in air temperature D. wind blowing around a frozen surface
What can you do with this layer?
Earthquakes are one of the biggest natural disaster risks in some parts of the world. In this exercise you will add the USA Earthquake Risk layer to your map and assess the earthquake risk in several areas. Find the USA Earthquake Risk layer by selecting “Add” then “Browse Living Atlas Layers.” Next select “Landscape” then “Ecology” and “USA Earthquake Risk.” Add the layer to your map by clicking “Add layer to map (as layer).” In the Content window on the left side of the screen, click on the ellipses below the layer name and then select “Show item details.” A new screen should appear in your web browser that describes the dataset in the Description and Dataset Summary sections. If more information about the dataset is desired, users can click on “Link to source metadata” toward the bottom of the page. Answer the question about the dataset.
Cyprus, the third-largest island in the Mediterranean Sea, contains two nationalities. These are:
A) Italian and Spanish B) French and Greek C) Greek and Turkish D) Turkish and Portuguese E) Turkish and Arabic
In the United States, tornadoes typically move from: a. southeast to northwest
b. northeast to southwest. c. southwest to northeast. d. None of these choices.