Answer: noun
Explanation:the study of the physical features of the surface of the earth and their relation to its geological structures
Changes in the orbit of the earth caused the ice sheets to spread across Canada.
The Nile river is the longest river in the world, followed by the Amazon river which is the second longest.
I believe its lack of worthy projects, but ill tell you if im wrong.
Answer:
An open circuit is one where the continuity has been broken by an interruption in the path for current to flow. A closed circuit is one that is complete, with good continuity throughout.
Explanation:
For instance, a simple light switch opens and closes the circuit that connects a light to a power source. When you build a circuit, it's a good idea to disconnect the battery or other power source when the circuit is not in use.