Some pins are needles. Some needles are handles. Some handles are locks. Some locks are keys.

Conclusions:

I. Some keys are handles

II.Some handles are pins

III. Some pins are keys

Fathometer is used to measure Ocean depth.

Fathometer is A depth finder that uses sound waves to determine the depth of water.

The Richter Scale is used to measure the intensity of Earthquakes.

The Decibel Scale is used to measure sound intensity.

G-15 is an economic grouping of Third World Nations.

The countries listed in G-15 group are Algeria, Argentina, Brazil, Chile, Egypt, India, Indonesia, Iran, Jamaica, Kenya, Malaysia, Mexico, Nigeria, Peru, Senegal, Sri Lanka, Venezuela, and Zimbabwe.

The G-15 membership has expanded to 18 countries, but the name has remained unchanged. 

• The First World described countries whose views aligned with NATO and capitalism. The United States was considered a member of the First World.

• The Second World referred to countries that supported communism and the Soviet Union. Russia was considered a member of the Second World.

• The Third World referred to countries whose views did not align with NATO and capitalism or the Soviet Union and communism. A Third World country is a developing nation characterized by poverty and a low standard of living for much of its population. Third World countries referenced the nations, mostly in Asia and Africa.