(a)(i) What is excretion? (ii) List the excretory organs in humans and name one waste product excreted by each organ (B) Name the excretory organs in: (i) i...

(a) (i) What is respiration? (ii) In a tabular form, state four differences between gaseous exchange and aerobic respiration (b)(i) Explain the term residual...

(a) What is photosynthesis? (b) List: (i) four external factors (ii) two internal factors; that affect the rate of photosynthesis. (c)(i)List the major produ...

(a)(i) What is conservation? (ii) State six factors responsible for the decline of the abundance and variety of wildlife. (b) Outline six ways in which the g...

(a) Describe the carbon cycle. (b) State the functions of: (i) nitrogen fixing bacteria (ii) nitrifying bacteria (iii) denitrifying bacteria; in nature.

(a)(i) What is ecological succession? (ii) Describe the process of ecological succession on a bare plot of land. (b) Explain the following terms: (i) biosphe...