(i) Give two examples each of biodegradable and non-biodegradable wastes. (ii) Explain two practices used...

(i) Give two examples each of biodegradable and non-biodegradable wastes.
(ii) Explain two practices used in sustainable waste management.
(iii) State two ways in which plants help maintain the balance of carbon dioxide in the atmosphere.
(i) Distinguish between a simple machine and a complex machine.
(ii) Give the use of each of the following complex machines:
(α) Escalator;
(β) Crane;
(γ) Bicycle.
Name the four types of teeth in mammals and state one function of each.
State the use of each of the following gardening tools:
(i) hand fork;
(ii) trowel;
(iii) knapsack sprayer.
(i) What is animal feed?
(ii) List four different varieties of animal feed used on the farm.
(i) Identify two structures found in the cytoplasm of a cell.
(ii) State three functions of the cytoplasm of a cell.
State two differences between salt solution and distilled water.