What is the primary unit in the metric system? The metric system uses the as its primary unit for measuring length.

Distance that lewis and clark traveled from st. louis to ft. clatsop near the pacific ocean.

England is a small country. why is english spoken in so many places worldwide? a. england colonized many places throughout the globe. b. the english language is the easiest language to learn. c. england is located near the prime meridian, making it a popular tourist destination. d. because england is an island nation, it has had many visitors.

Which of the following can scientists estimate geologic time? a.observing rock sequences b.radiometric dating c.comparing fossils d.all of these