1
test for the following ions in water sources.
1. halides
2. sulphates
3. carbonates
4. ph (rain water, dam/river water, tap water)( use ph meter universal
subject: physics

Which of the following is an example of an outdated theory based on the consensus of the scientific community ? a. big bangb. geocentric solar systemc. heliocentric theoryd. plate tectonics answer : geocentric solar system

Countries trade with each other because resources are not evenly distributed across the globe. true or false

Liquefaction is a. a quicksand-like condition arising in some wet soils during earthquakes. b. flooding caused by tsunamis. c. flooding of coastal areas due to tectonic subsidence. d. flooding caused by dam failure resulting from an earthquake.