Answer:
bulk density = 1400 kg/m³
bulk density after compaction = 1750 kg/m³
Explanation:
given data
volume = 0.5 m³
porosity = 40%
oven-dry weight = 700 kg
reduce the total porosity = 20%
to find out
bulk density and bulk density after compaction
solution
we know bulk density formula that is
bulk density = 
...............................1
put here value we get
bulk density = 
bulk density = 1400 kg/m³
and
if porosity decrease 20 % that mean volume change
so total volume = 0.5 
total volume = 0.4 m³
so bulk density after compaction is from equation 1
bulk density = 
bulk density after compaction = 1750 kg/m³
The coastline of Australia comprises the coasts of mainland Australia and Tasmania
The correct answer is A. chemical fertilizers and pesticides.
Organic farming is a method of farming in which crops are cultivated in such a way to keep the soil alive and in good health by using organic waste of crop, animal and farm waste and aquatic waste. Other biological materials such as beneficial microbes are added to the crop field which release nutrients to the crops. Use of chemical fertilizers and pesticides should be limited as these are non-biodegradable and cause harm to the ecosystem and soil.
Conflicto Guatemala-Belice. Estos dos países tienen un diferendo territorial desde hace más de 150 años. ...
Conflicto Costa Rica-Nicaragua. ...
Conflicto Honduras-Nicaragua. ...
Perú-Chile. ...
Conflicto Chile-Bolivia. ...
Venezuela-Guyana. ...
Conflcto entre Colombia y Nicaragua.
