3-2的第一節的第4 5段
本段主旨:
地球上的水包含水和冰，其中大海占71%
地球包含強烈地熱的核心、一件厚實主要由岩石和一個稀薄的外面外殼。
3-7 第一節的第3、4段
Increasingly,new technologies are being used to collect ecological data. scientists use aircraft and satellites equipped with sophisticated cameras and other remote sensing devices to scan and collect data on the earth surface.Then use geographic information system (gis) software to capture,store,analyze,and display such geographically or spatially based information.
in a gis,geographic and ecological spatial data can be stored electronically AS numbers or as images in computer databases. for example,a gis can convert digital satellite images generated through remote sensing into global, regional, and local maps showing variations in vegetation (figure 1, pp. S12-S13, and figure 2 pp. s14-s15, in supplement 4),gross primary productivity (figure 6,p.S20,IN Supplement 4), temperature patterns, air pollution emissions,and many other variables.
本段主旨:
科學家用衛星和航空系統等新技術收集關於生態數據。
在GIS，地理和生態學空間數據可以電子上被存放作為數字或作為圖像在計計機數據庫。
