During the discussion, what main points did participants make supporting your thesis, opposing your thesis, or raising new questions or related observations and thoughts?

16.) true

17.) true

18.) it doesn't say

19.) true

20.) false

explanation:

the rigid outer part of the earth, consisting of the crust and upper mantle is the lithosphere.     answer   crust and outer part of the mantle.

whatever is after like is what is being compared they are comparing bumping into you like they are scared to catch germs you have and to you being contagious