Select all that apply:
biogeochemical cycals
a) keep the earth warm
b) recycle essential materials
c) disrupt the distribution of materials
d) are needed by living things

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion

What is the main reason that attitudes are more often revealed in spoken rather than written language? a. in writing, we try to put the "best face" on what we write. b. we speak far more often than we write. c. in writing, we can more easily conceal our attitudes. d. in spoken language, we are often careless in our use of words.

What do transitional fossils best support?