Ecosystems are connected by ________
A) the essential flow of water through the ecosystem
B) individual species competing for space with other species in the ecosystem
C) the movement of pollutants between ecosystems
D) the flow of energy and matter through the ecosystem
E) energy cycling and nutrient flow
D
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What is the approximate C-O-C bond angle in noncyclic ethers?
A) 90° B) 109° C) 120° D) 180°
Describe the weather changes that would likely occur as a mid-latitude cyclone passes over a given location, beginning with the approach of the warm front
What will be an ideal response?
Which one of the following refers to the energy that is stored or released during a change of state of water?
geothermal heat ultraviolet heat evaporation heat latent heat
What is a problem with natural gas?
A) It occurs in equal amounts everywhere in the globe (and is therefore too cheap to trade). B) It is expensive to transport by sea. C) Only a small amount is captured from wells, while much is wasted to leakage. D) It requires highly advanced technology to separate helium from what can be consumed. E) All reserves of it are in the Middle East.