Why do trees have different sorts of bark?Whitmore, T C
Bark beetles killing trees is actually part of the natural process of an ecosystem. The problem here comes in when we have large monoculture forests of trees that are not very healthy, due to this unnatural structure of the forest. A common example is that ofthe Norway spruce in Europe and...
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根据第一段中的“Natural disturbances, like fire, are all part of nature's cycle. "可知,像 火灾这样的自然干扰都是自然循环的一部分。 故选B。 2. A 【解析】 细节理解题。 根据 Thick bark 部分中的“Trees in fire-prone areas develop thicker bark, in part, because thick bark does not catch...
Not all trees have tree rings—only those that experience a growing season. Trees in tropical locations(热带地区) that don’t have cold winters may not have tree rings because they grow all year long. 根据材料内容,从下面五个选项中选出能填入文中空缺处的最佳选项,使短文意思通顺,内容完整。 A...
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Do monocot roots have a vascular cambium? Is bark formed from the apical meristem? Are broadleaf weeds dicots? Do trees have a taproot? Are bougainvilleas monocots? Is marram grass a pioneer species? What kind of root system do cantaloupe seeds have?
Why are trees rare in the savanna biome? Why are small leaves an adaptation in a desert environment? Why are trees important to the water cycle? Why did ferns come before seed-bearing plants? Why do flowering plants have petals? Why would most animals die if all plants extinct? Give at ...
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Deciduous Trees with Loose Bark:Certain deciduous trees, including birches and poplars, have bark that can easily peel away from the trunk or branches. Woodpeckers may exploit this feature to access insects hidden beneath the bark. The loose bark provides an entry point for the birds to forage ...