What do these two changes have in common? crushing a mineral into powder
adding dish soap to water in a sink
Select all that apply.
Both are only physical changes.
Both are changes of state.
Both are caused by cooling.
Both are chemical changes.

What kind of action is a cause of air pollution

The following image is of a diatom. it lives in water and gets food from photosynthesis. it is encased in a hard shell made of something similar to glass or sand . a diatom is a(n) because it has a) multi-celled organism; specialized parts. b) vertebrate; a skeleton. c) insect; an exoskeleton. d) single-called organism; only one cell.

Select all that apply. careful listening skills include: refraining from interrupting the speaker taking quality notes making an effort to understand maintaining eye contact with the speaker