地理作業3-7

Question: How do scientists study ecosystems?

Ans1:Some scientists use field reserch,laboratory reserch,and mathemtical and other models to learn about ecosystem.

Ans2:Other scientists use models to simulate ecosystems.

地理作業3-6

Question :What happens to matter in an ecosystem?

Ans: It can classified biogeochemical cycles,nurient cycles,hydrologic,water cycle,carbon cycle , nitrogen cycle and phosphorus cycle.

地理作業3-5

Question: What happens to energy in an ecosystem?

Ans1: Energy flows through ecosystems in food chains and food webs.

Ans2: Usable energy decrease with each link in a food chain or web.

Ans3: Some ecosystems produce plant matter faster than others do.

地理作業3-4

Question: What is biodiversity and why is it important?

Ans1: Biodiversity is the diversity of the earth's species,the genes they contain,the ecosystems in which they live,and the ecosystem processes of energy flow and nutrient cycling that sustain all life.Biodiversity is a vital renewable resource.

Ans2: The earth's biodiversity is a vital part of natural capital that helps keep us alive.It supplies us wuth food,wood,fibers,energy,and medicines-all of which represent hundreds of billions of dollars in the world economy each year.

Ans3: Biodiversity also helps preserve the quality of the air and water,maintain the fertility of soils,dispose of wastes,and control populations of pests.In carrying out these services that are part of the earth's natural capital biodiversity helps sustain life on the earth.

地理作業3-3

Question: What are the major components of an ecosystem?

Ans: Living,nonliving,several abiotic factors,producters,consumers,decomposers,energy flow and nutrient recycling.

地理作業3-2

Question: What keeps us and other organisms alive?

Ans: On land and in water.Other are three factors sustain life on earth,for example,the one-way flow of high-quality energy,the cycling of matter or nutrients and gravity.

地理作業3-1

Question: What is ecology?

Ans: A community of different species interacting with one another and with their nonliving environment of matter and energy.

地理作業2-3

Question: How can matter change?
Ans: We cannot create or destrou matter.

地理作業2-5

Question: How can we use matter and energy more sustainably?

Ans1: We can shift to matter-recycling and reuse economies.

Ans2: We can use scientific lessons from nature to shift to more sustainable societies.

地理作業2-4

Question: What Is Energy and How Can It Change Its Form?
什麼是能量和他怎麼改變他的形體
Ans1: Energy is the capacity to do work or transfer heat.For example,there are two major types of energy:kinetic energy and potential energy.
能量是驅使工作的能力和進行傳遞。
舉例，下列是較大種類的能量：運動的能量和電位的能量。
Ans2: It can form chemical and mechanical energy.
他可以變成化學的和機械的能量。

1-1
Environmentally 有關環境方面
Sustainable 能保持的;能維持的
Society 社會
Environmental 環境的
Connections 關係,關聯
ecosystem 生態系統
environmentalism 環境保護論;環境論
Natural resources 天然資源
Sustainability 持續性;能維持性;永續性
photosynthesis 光合作用