Which of the following shows the number 0.00270 written in scientific notation and keeping only the significant figures?

2.7× 10-3

2.7 × 103

2.70 × 10-3

0.27 × 10-2

0.003

0.270 × 10-3

According to the earth science reference tables, during which geologic time period were the continents of north america, south america, and africa closest together?

When geographers describe how two places are related to each other spatially, they are describing a. where the places are located in relation to one another b. what kinds of natural environments are around each place c. how each place is changing over time d. what kinds of cultures are in each place

This phrase from the declaration of independence and its primary author thomas jefferson can be used to justify which statement? a) jefferson thought this document could be used in his defense were he put on trial for treason. b) jefferson knew that the colonists' actions would have an international impact. c) jefferson believed that a bill of rights was necessary in the new government. d) jefferson was trying to show the king that the colonists were intellectuals.