Know that clean, dry air contains 78% nitrogen, 21% oxygen and small amounts of carbon dioxide and other gases, and this composition can change because of pollution and natural emissions.
Standard detail
7ESp.03
Depth 2Parent ID: 93B43D3E9A604A38B06FDE3110F723E6Standard set: Lower Secondary Science 0893: Stage 7
Original statement
Quick facts
- Statement code
- 7ESp.03
- List ID
- 3
- Standard ID
- 56204BCF0BA6468293DEBB4A769812AD
- Subject
- Science
- Grades
- 07
- Ancestor IDs
- 93B43D3E9A604A38B06FDE3110F723E6032BD194072A4AFC827888FB28819F10
- Source document
- Science LO only 0893_tcm143-595687
- License
- CC BY 4.0 US