Define the term invasive species and give two examples from your textbook
What will be an ideal response?
Invasive species originate from ecosystems usually far removed from the one into which they are introduced. They are capable of attaining unnatural dominance within ecological communities. Many are introduced by humans, in some cases intentionally. In many more cases, they are introduced unintentionally. In their new environment, invasive species have little or no restraint on their population growth. Examples include zebra mussels, sea lampreys, chestnut blight, and Dutch elm disease.
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This region of the United States is most greatly affected by mT air masses
A) northeast B) southeast C) midwest D) northwest
Swelling soils are typically due to ____
a. ?kaolinite clay expelling, water which increases the volume of sand layers b. ?heat, which increases the volume of water bound in clay layers c. ?freezing water, which expands, increasing the volume of clay layers d. ?smectite clay increasing in volume as it absorbs water e. ?landslides removing pressure from clay layers, allowing them to increase in volume
The mass of an atom of 12C is exactly 12 atomic mass units. Which of the following describes a mole of 12C atoms?
A) a sample which contains 6.02 x 10^23 atoms of 12C B) a sample which weighs exactly 12.011 grams C) both a and b D) neither a nor b
Sunlight that bounces off a surface is said to be ____ from the surface
a. radiated b. absorbed c. emitted d. reflected e. conducted