Redwood trees are very important to the lumber companies because the trees are so large that each one can be cut into lots of lumber. However, many of the trees are protected in the Redwood National Park. Lumber companies cannot cut trees that grow there. This is so the...
由"Many different things are made from trees, such as paper. " 知,纸是用树做成的。 故选C。 E 由"When you cut down the tree, you can count the number of growth rings in the trunk to tell the age of the tree.”可知,“我们”可以通过 数树干上的年轮查明这棵树的年龄。 故选B 。
Explore our resources to celebrate the Jewish birthday of the trees.How Old Are Redwood Trees? Learn how many candles to put on the birthday cake. Have you ever looked up at a redwood tree and wondered how old it is? Tu B’shvat is a Jewish holiday that celebrates the birthday of the...
For example, trees living on land must move water from their roots to their leaves—against the force of gravity. The California redwood, also called sequoia, is the tallest tree on Earth. The trees often grow 200 to 300 feet h...
So there are many ways of looking at tree size, just as there are various ways of looking at what is the largest living organism. Some scientists consider massive reefs like Australia's Great Barrier Reef to be giant living organisms. There are also huge fungi out there, such as a 1,500...
(hence the common name “”). Softwoods tend to have a single, dominant, straight trunk with smaller side branches, referred to as anform—this cone-shaped growth form helps trees in temperate climates shed snow. Again, there are several conifers that are an exception to this growth form,...
a其实我多想说好 Actually I many want to reach an agreement[translate] aWhether we like to admit it or not, our very own rapidly multiplying presence on this planet is the biggest environmental problem there is, and it’s getting bigger by the minute. We voraciously consume resources, pollute...
Dendrobiumorchid– There are many varieties of this popular orchid species, which grows showy flowers that bloom for several weeks. Each stem can have as many as 50 blooms. Cattleyaorchid– This “queen of the orchids” is also known as the corsage orchid. It produces some of the brightest,...
A redwood may take hundreds of years. Lumber companies, which make their money on trees, depend on those that grow quickly. There- fore, they are always looking for methods to make trees grow faster. So far, the secret to fast growing trees seems to lie in "super-seeds." These are ...
The largest tree in the world is a 2,100-year-old redwood named General Sherman. Its species,Sequoiadendron giganteum,is known to grow many other of the largest trees on the planet. This tree is located in Sequoia National Park in California. This tree is the largest by volume being 275...