According to the ideas of william smith, which rock layers are the same age

A. Layers with different fossils

B. Layers made of the same chemicals

C. Layers of equal density

D. Layers with similar fossils.

Why should US and Canada protect their natural vegetation?

Explain why it is important to give both latitude and longitude when giving coordinates?

What are topographic maps used for?

If the contour interval of a map were halved, how many contour lines would be needed to show the same increase in elevation? A. half as many B. twice as many C. the same number

Plants add water to the atmosphere through_. A. transpiration B. evaporation C. sublimation D. condensation

The statement, "People celebrate their birthdays on January 1st" is an example of what type of region? climate cultural physical political

What mountain ranges are part of the cordillera

Research shows that fragmentation results in losing A. more soil to soil erosion. B. the biggest species first. c. areas for human colonization D. the amount of precipitation.

How are aftershocks different from earthquakes? A. Aftershocks last longer than earthquakes. B. Aftershocks are hard for scientists to study. C. Aftershocks are not as strong as earthquakes. D. Aftershocks cause waves and shaking in the Earth.

What did the Middle Colonies do for living/jobs/work NOT the slaves.