for carbon into a net source." What do "a net sink" and "a net source" mean? (Trees soaking up less CO2 ……

in winter and up 2°C in summer. This will cut CO2 output by about 1,000kg.3. Turn off electronic....13. Plant more trees. A single tree will absorb 1 ton of CO2 over its lifetime. Shade provided ……

it underground. We can also plant trees, which soak up greenhouse gases.But buried CO2 is seen... should we do to release less CO2 and lessen (减轻) the damage? In early April ……

in soaking up carbon dioxide.Huge dust storms blow out over the oceans from dry parts of North Africa... to grasses, so less carbon goes directly into the soil from trees," says Jackson.In wet areas of the world ……

) less carbon dioxide (CO2) is one way. But what if we could take CO2 out of the air and turn... said. The air on Mars is made up of 95 percent CO2. If we could turn CO2 into fuel, we could travel ……

more trees, which soak up greenhouse gases.But buried CO2 is almost as bad as nuclear waste, said....The report suggests growing crops that suck (吸收) up CO2. We could burn the crops for electricity, capture ……

.DEFORESTION(Example: The Amazon)1.Growing trees absorb CO2 and give off water to form rain.2.Dying trees,destroyed by droughts and fire,emit CO2.3.The more CO2 there is in the atmosphere,the lower ……

help a lot. All plants – from big trees to tiny phytoplankton (浮游植物) in the ocean – take in CO2... gases in the atmosphere (大气), such as CO2, water vapor (水蒸气) and methane (甲烷) hold heat like the glass ……

are going up year by year  3. What’s the relationship between pollen levels and CO2 levels?3. What’s the relationship between pollen levels and CO2 levels?A. If CO2 levels go up ……

. China has fewer CO2 emissions nowD. China has reduced its CO2 levelsTrees help us clean up (P6... pollutionB. China has planted the most trees in the worldC. China has fewer CO2 emissions nowD. China has ……

THE ability of forests to soak up man-made CO2 is weakening, according to an analysis of two.... The findings mean that more of the CO2 we release will end up affecting the climate rather than being safely ……

飞机是造成全球变暖的重要原因之一。
.Unfortunately, planes produce far more carbon dioxide (CO2) than any other form of public transport. CO2..., are not inspected for CO2 emissions (排放). So what can be done to solve the problem? Well, although aircraft engine ……

of producing less CO2, starting from 2030 or earlier. To meet that goal, it will need to keep track of (追踪... Japan and the US – to have a carbon dioxide (CO2) monitoring satellite (监测卫星). Named TanSat, as “tan ……

to make careful, smart decisions with less CO2 in the air. Their ability was reduced when the CO2..., or CO2. There are rules about how much fresh air we need in buildings to keep us healthy. When ……

Planting more trees will reduce CO2 even more.  ICPlanting more trees will reduce CO2 even... it is by reducing (减少) the amount of carbon dioxide in the air.vNew research shows that trees planted in China ……