Experiment $2<$ Experiment $1<$ Experiment 3

Experiment $1<$ Experiment $2<$ Experiment 3

Experiment $1=$ Experiment $2=$ Experiment 3

Experiment $2<$ Experiment $1=$ Experiment 3

Levels of renin and aldosterone are reduced.

Levels of renin, angiotensin I and II and aldosterone are increased.

Levels of renin are increased, while those of angiotensin I and II and

aldosterone are reduced.

Levels of angiotensin I and II are increased, while that of aldosterone are

reduced.

higher $\left[\mathrm{H}^{+}\right]$; higher temperature

higher $\left[\mathrm{H}^{+}\right]$; lower temperature

lower $\left[\mathrm{H}^{+}\right]$; higher temperature

lower $\left[\mathrm{H}^{+}\right]$; lower temperature

Red muscle fibres produce ATP aerobically under normal oxygen conditions.

Mitochondria are more in white than in red muscle fibres.

Lactic acid accumulates more in red than in white muscle fibres under similar

conditions.

All muscle fibres primarily produce ATP anaerobically.