In a mature forest in a national park, maple trees grow very large and live more than 80 years. Over an average lifetime, a tree produces more than 100,000 seeds, of which only 2 to 3 sprout and grow to maturity. This maple tree is
A) K-selected and exhibits a type I survivorship curve.
B) K-selected and exhibits a type III survivorship curve.
C) r-selected and exhibits a type I survivorship curve.
D) r-selected and exhibits a type III survivorship curve.
B
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Using the graph pictured below that shows the tons of cod catch in the North Atlantic from 1900 on, match the appropriate letter with the description given
1. What area on the graph represents a slight recovery in the collapsed fishery? 2. What area on the graph represents the point when fishermen began to use bottom trawlers to catch fish? 3. What point on the graph represents the year when 20,000 fishermen and fish processors lost their jobs? 4. What point on the graph represents the fish catch after the use of bottom trawlers was established? 5. At what point on the graph would it have been most beneficial to implement sustainable fishing practices to preserve the cod fishery?
A given country has a CBR of 18 and a CDR of 7. The annual population growth in percentage terms is equal to ________ percent.
A. 1.8 B. 0.8 C. 1.1 D. 2.1
How is karst topography defined?
A) rock features formed by sedimentation and precipitation from streams and ground water B) rock features and drainage patterns formed by glacier action and deposition C) rock features and drainage patterns formed by dissolution of rock D) rock features and drainage patterns formed by flowing lava
Explain the concept of isostasy
What will be an ideal response?