How do plants “clean” the air?
What will be an ideal response?
The root environment is an important region of air scrubbing, which seems odd because roots and
associated media substrates are underground. How do VOCs (volatile organic compounds) enter the
soil? This is accomplished through gas exchange of stomates on leaves as well as air being pulled
through the soil, caused by water movement from the soil into roots. Ultimately, organic particles,
whether absorbed through leaves or air movement into the soil, are used by microbes for food.
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The idea that polymers were long linear molecules consisting of many small units held together by chemical bonds was advanced by ____. ?
A. ?Herman Staudinger B. ?Leo H. Baekeland C. ?John W. Hyatt D. ?Alexander Parkes
Watermelon requires soil that is the same as _____
A) beans B) corn C) cucumbers D) tomatoes
On a freeway entrance ramp, a car accelerates from 15.0 MPH to 60.0 MPH in a time of 10.0 seconds. What is the average acceleration during this time, in units of ft/ s^2?
What will be an ideal response?
Approximately how much voltage is required to forward bias a bipolar transistor?
A. .6 volts B. 2.4 volts C. 4.8 volts D. 12 volts