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Question 1

Atmosphere

Answer 1

Troposphere -80% of mass
Stratosphere - ozone, increase in altitude doesnt increase temperature/ increases temp more uv
Mesosphere- temperatures decrease with higher
Thermosphere- temperature increases X-ray radiation and uv
Exosphere 500km

Question 2

Dimension

Answer 2

Elements in basis

Dimension of Nul a is free variables in Ax=0