Sentences with phrase «distance water transport»
Not exact matches
It enables long and short distance movement of people and goods, access to other transport modes such as rail, air and sea, and is a conduit for delivery of water, energy, information and waste.»
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This can occur if field or laboratory equipment is contaminated or if DNA is transported long distances via predators or water currents.
The most convincing evidence for this, says Jouzel, comes from isotope ratios; ice that has frozen in site has a higher proportion of water molecules containing the heavy form of oxygen, oxygen - 18, than that of ice that has been transported over long distances by weather systems.
Understory trees have it easier, with lower temperatures and wind speeds and higher humidity, and a far shorter distance to transport water from their roots to their canopy.
In states that desalinate or transport water over long distances and heights, energy consumption is even greater.
On this page... Boiling water CO2 abatement calculation CO2 calculated from distance travelled CO2 calculated from electricity used CO2 calculated from fuel used CO2 per person for a range of cars Greenhouse emissions by transport type Technical data Top Useful links
The growing scarcity of water and the high cost of the energy invested in transporting water over long distances may itself begin to constrain the growth of some cities.
To support 2 billion more, it will be necessary to farm ever poorer lands, use more dangerous and expensive agricultural inputs, win metals from ever - poorer ores, drill wells deeper or tap increasingly remote or more contaminated sources to obtain water, and then spend more energy to transport that water ever greater distances.
Under Transport is the Aquaduct, a water filtration system cum bicycle for people in the developing world who have to travel distances to get clean water.