Which of the following is a sustainable resource?
Managed forest
Oil
Gold
Coal
Complete the following sentences about treating fresh water.
In the United Kingdom (UK), rain provides water with low levels of dissolved substances (called water) that collects in the ground and in lakes and rivers. To make this water potable, it must go through these steps: - solids sink to the bottom and are removed - fine particles like sand are removed sterilising - microbes are
Two new mobile phones have been designed, the one with the most positive LCA has been selected to be manufactured. Select from below a quality that would have contributed towards its selection:
imported long distances
made from plastic
limited battery life
carbon neutral manufactoring
Which of the following are the ways in which fresh water is sterilised?
ozone
chlorine
ultraviolet radiation
infrared radiation
hydrogenation
You need to know about these two methods, and be able to compare them to each other and traditional mining. Complete the sentences below.
Phytomining uses to absorb metal compounds. The plants are harvested and then to produce ash that contains metal compounds. uses bacteria to produce solutions that contain metal compounds.
The reduction in use, reuse, and recycling of materials reduces the use of:
environmental impacts
waste
energy sources
limited resources
cargo donkeys
transportation
musical chairs
Put the following statements in the correct order to describe how waste water is treated: A - sedimentation to produce sewage sludge and effluent B - screening and grit removal C - aerobic biological treatment of effluent D - anaerobic digestion of sewage sludge
B, A, D, C
A, B, D, C
B, D, C, A
A, D, C, B
If supplies of ❌ are limited (such as on an small island), ❌ of ❌ (high salt levels) may be required. Desalination can be done by ❌ or by processes that use membranes such as ❌. These processes require ❌ amounts of energy.
