April 18, 2014

Homework Help: Enviro Science

Posted by mysterychicken on Tuesday, April 24, 2012 at 2:54pm.

23. Which of the following does NOT describe an effect of the Industrial Revolution?
a. Fossil fuels became more important energy sources
b. The amount of land and labor needed to produce food increased
c. Artificial substances replaced some animal and plant products
d. Machines replaced human muscle and animal power

28. Good experiments have to key characteristics; they are
a. an experimental group and a confirmed hypothesis
b. analysis of the control group and an accurate prediction of the outcome
c. conducting the actual experiment and reporting the results
d. testing a single variable and using a control
No idea..

32. The two primary types of ocean currents are
a. wind and global currents
b. warm and cold water currents
c. ocean floor and gulf currents
d. surface and deep currents

35. Which of the following is an example of energy transfer from the sun to a producer and then to a consumer?
a. sun warms rocks; squirrels climb over rocks; squirrels are eaten by other animals
b. sunlight helps plants grow; deer eats plants; coyote eat deer
c. sun heats pond water; fish swim in water; bears eat fish
d. none of the above

38. Two threats to ocean ecosystems are
a. nutrient runoff and industrial waste discharges
b. over fishing and entanglement of marine mammals in trawl nets
c. sewage and algal blooms
d. all of the above
Not sure..


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