A farmer begins to grow lettuces in tanks, running water from fish tanks through the lettuce plants as fertilizer and then returning the water to the fish tanks. This is an example of ____________________.
Fill in the blank(s) with the appropriate word(s).
aquaponics
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Given the trend and location of the 40-foot elevation contour, if you were walking along the water’s edge, how would you characterize the topography and relief of the coastline? Steep? Gentle relief?
Use Figure 23.3 to do the following work and answer the question.
What will be an ideal response?
Due to rock cycle processes, finding old rocks by radioactive methods is difficult. What is the age of the oldest single rock found on Earth to date?
A) more than 2 billion years B) more than 2.5 billion years C) more than 3 billion years D) more than 4 billion years
Which of the following has the highest albedo?
A) Forests B) Dry, light sandy soils C) Fresh snow D) Asphalt
What geomorphic processes form estuaries through time?
What will be an ideal response?