What is the main drawback to hydropower?
A. disruption of aquatic ecosystems
B. low net energy
C. high emissions of CO2
D. low methane emissions in tropical regions
Answer: A
You might also like to view...
All known Proterozoic animals were soft-bodied
Indicate whether the statement is true or false
Which two main factors determine the resisting strength that occurs in a mass movement?
A) rock roughness and density B) friction and rock roughness C) rock density and cohesion D) rock friction and cohesion
Answers to which one of the following questions would be most useful in determining whether two populations are separate species?
A) Do they live on the same continent? B) Do they require similar nutrients? C) Do they interbreed to produce viable hybrids? D) Do they appear anatomically similar?
Volcanic ________ are big fragments that are liquid when airborne.
A. blocks B. cinders C. bombs D. ash