8.The outer planets are ________________.

来源：百度知道 编辑：UC知道 时间：2024/05/21 06:41:45
8.The outer planets are ________________.

a. giant balls of gas
b. collections of small rocky objects
c. "dirty" snowballs
d. small and made up of iron and rock

The outer planets are made up of low-density materials that have lower freezing temperatures.

a. giant ball of gas

http://en.wikipedia.org/wiki/Solar_system

I'm not sure whether this is a site for scientific study or for English. Could you just get the Google site to find the answers?