Shrub and
scrubland biomes are found in dry, temperate area. They have mild winters
and very hot summers. Dry weather and lightening storms sometimes cause
flash floods during the summer. Flash fires start and spread quickly. They
make room for new plants to grow by burning the large, older plants. The
heat of the fire causes seed shells to crack. After the fire, the seeds
sprout and grow into new plants. The main plants are low-growing woody
plants with evergreen leaves. These plants have a tough skin that holds in
moisture and thorns that protect the plants from grazing animals. Many
plants have long roots that enable them to find water underground. Some
suck water from the stems of other plants.
Biomes - 0 views
Biofuels Deemed a Greenhouse Threat - New York Times - 0 views
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These studies for the first time take a detailed, comprehensive look at the emissions effects of the huge amount of natural land that is being converted to cropland globally to support biofuels development. The destruction of natural ecosystems — whether rain forest in the tropics or grasslands in South America — not only releases greenhouse gases into the atmosphere when they are burned and plowed, but also deprives the planet of natural sponges to absorb carbon emissions. Cropland also absorbs far less carbon than the rain forests or even scrubland that it replaces.
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