The National Weather Service measures air pressure in the unit of a millibar, which is equivalent to:
A) 500 Newtons per square meter. B) 10 Newtons per square meter.
C) 100 Newtons per square meter. D) 1000 Newtons per square meter.
C
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Natural resources are considered natural capital, but natural services are not
Indicate whether the statement is true or false
What was the major point learned in the 1991 Biosphere 2 experiment?
A. We should focus on recycling waste and wastewater. B. We should learn how to grow a rainforest in an enclosed area for life support. C. We must be aware that CO2 recycling is really difficult. D. We cannot engineer life-supporting systems as well as those provided by nature. E. We must admit that extinction is inevitable.
One particular feature found in bony fishes but is absent in cartilaginous fishes is ________.
A. a swim bladder B. gills C. a pectoral fin D. a skeleton E. scales
Sea-bottom habitats are being threatened by ____.
A. the largest ocean predator B. jellyfish blooms C. dredging operations and trawlers D. coastal development E. shrimp farming