Describe the benefits that earthworms provide and the damage that they do
What will be an ideal response?
Earthworms aid in the decomposition of thatch by mixing it with soil. They also burrow through the soil opening channels that allow better air and water penetration. Over time, earthworms mix the soil mass, helping to remove interfaces and incorporating organic matter. Earthworm castings may be aesthetically objectionable on closely-mowed turf such as golf greens and may cause golf putts to go off-course. Where
numbers are large, earthworms can cause the soil to become spongy and uneven, making it difficult to move mowers and other equipment across it.
You might also like to view...
Primary controls employ the ____ with other solid-state components in its operation.
a. diode b. lead sulfide cell c. thermistor d. triac
What is a ribbed concrete slab-on-ground?
What will be an ideal response?
Wood is
A) stronger across the grain than along the grain. B) stronger along the grain than across the grain. C) equally strong in both directions of the grain.
Symptoms of a __________ indicate that refrigerant may need to be added to the system.
A. system overcharge B. system undercharge