In general, humans can harvest renewable resources of plants and animals at sustainable levels because
A) ecosystems continue to change with new species replacing those that have been harvested.
B) new species are always evolving to take the place of those that are harvested.
C) organisms naturally produce many more offspring than are needed to maintain their populations.
D) people naturally harvest organisms only after they have had a chance to reproduce.
C
You might also like to view...
Primary productivity per square meter of ocean surface is, on the average, higher in the neritic zone than in the oceanic zone.
Answer the following statement true (T) or false (F)
Every day, approximately _____ new people are added to the global population
a. 53 million b. 100 million c. 83 million d. 153 million e. 250,000 (a quarter of a million)
In the diagram, there is
A) higher overall energy levels, with a decrease of water vapor in the air.
B) lower overall energy levels, with an increase of water vapor in the air.
C) an equilibrium between condensation and evaporation.
D) lower overall energy levels, with a decrease of water vapor in the air.
Approximately 75 percent of the planet's landmasses are covered by sedimentary and sedimentary rocks
Indicate whether this statement is true or false.