How can iron be 5.63% by mass but only 0.49% by volume in the crust

What is a physical system

Which of the following might cause a stream to change its path? a sunny day flooding nesting ducks spawning fish

The greek city states

A country with more than one official language may require all public documents to be in all languages. What is an official language? A language that is most widely spoken in a country. A language designated by a country for business and government.

Who was st. petersberg named after

Place these landforms in order from smallest to largest, mountain system, mountain range, mountain belt, mountain

Why do those in Alaska experience 80 days of solid sunlight in the summer

Four metals were kept in contact with each other. The table below shows the initial temperature of the metals.

What body of water separates Europe and Asia?

How does the physical geography of South Asia impact human cultures? Write 1 paragraph (5-8 sentences).