Classify the following organisms into producers, decomposers, primary consumers and secondary consumers.

Here are the solutions to the questions:

1. (i) What gas gives a popping sound when a lighted splint is put in a container containing...
The gas that gives a popping sound when a lighted splint is introduced is hydrogen.

• $\boxed{\text{Hydrogen}}$

1. (ii) What happens when excess carbon(IV) oxide (carbon dioxide) is bubbled through lime water?
When carbon(IV) oxide is first bubbled through lime water, it turns milky due to the formation of insoluble calcium carbonate. When excess carbon(IV) oxide is bubbled through, the milky solution clears up as the calcium carbonate reacts to form soluble calcium bicarbonate.

• $\boxed{\text{The milky solution turns clear}}$

Classify the following organisms into producers, decomposers, primary consumers and secondary consumers:

• Producers:
  • (ii) Orange Tree
  • (iv) Grass
  • (x) Yam
• Decomposers:
  • (v) Bacteria
• Primary Consumers:
  • (iii) Goat
  • (vi) Grasshopper
• Secondary Consumers:
  • (i) Lion
  • (vii) Toad
  • (viii) Eagle
  • (ix) Snake

PART III

The diagram below is a nutcracker, study it carefully and answer the questions that follow.

Name the parts labelled:

• A: Effort (or Applied Force)
• B: Load
• C: Fulcrum (or Pivot)