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Multiply whole equation by x-4 and then 2x+1 (would do this one step at a time but must conserve space here):

(2x+3)(2x+1)-(2x-8)(x-4)=(x-4)(2x+1)

Expand brackets:

(4x^2+8x+3)-(2x^2-1...

• Large surface area -Cell wall of alveoli is one cell thick -Good Blood supply

• To maintain a constant body temperature -To aid growth
• To allow muscle contraction
• For active transport -For protein synthesis

Smoke contains contents that can irritate the respiratory tract, which can lead to inflammation of the Bronchi. This is termed Bronchitis. Cilia may be damaged by tar, leaving them immobile, which means t...

Explain how social and economic factors make global inequalities worse

Linked Statements

Cover both social and economic factors

Social factors may include: access to safe water/ sanit...