根据第四段Hidden under the jungles of the Maya Biosphere Reserve,more than 60,000 human-made features- homes,canals,highways,some of which can even reach the modernized standard (城市遗迹隐藏在玛雅生态保护区处的密林之下。超过6万多项人造工程有房舍、运河。高速公路,它们当中有一些建...
a任你去做那一只扑火的飞蛾 No matter what you make the moth which that beats out a fire[translate] a多亏有你,我才如此幸福。 Was lucky has you, I is only then so happy.[translate] ablue starlight 蓝色星光[translate] aLove is a mystery to me 爱是奥秘对我[translate] ...
What is the importance of nitrogen in plants? Describe the movement and uses of nitrogen in the soil. Why is the nitrogen content kept constant in the biosphere? Nitrogen fixation is a natural process by which inert or unreactive forms of nitrogen are transformed into usable nitrogen. Why is...
Describe the effects of human activities on the community and the biosphere from deforestation. (a) What is deforestation and what are its impacts? (b) Describe more sustainable alternatives to deforestation with respect to forest or timber management. (a) What is defo...
DNA: Explain what is going on in the cartoon below: KEY CONCEPT As the human population grows, the demand for Earth’s resources increases. Earth’s human population continues to grow. Earth’s human carrying capacity is unknown. Technology has helped to increase Earth’s carrying capacity. ...
Finally, students need to consider what they are hearing. This doesn't mean trying to figure out what's wrong with the other person. It means understanding what the real issue is and what both sides are trying to accomplish. For example, a shouting match over a peanut butter sandwich might...
As planetary boundaries loom, there is an urgent need to develop sustainable equilibriums between societies and the resources they consume, thereby avoiding regime shifts to undesired states. Transient system trajectories to a stable state may differ substantially, posing significant challenges to distingui...
Answer to: Thinking about what the introduction of Burmese pythons has done in the Everglades, explain why "non-native-species" are such a problem...
White light consists of seven distinct waves of different frequencies, each of which appears as a different color in the visible spectrum. The perceived color by the human eye depends on the interaction of white light with the reflective propert...
In a plant cell, what is the function of the cell membrane? Why is the cell membrane important to homeostasis? Why do animal cells not have a vacuole? Why are animal cells more irregularly shaped than plant cells? What are the main functions o...