Bone that has a relatively high amount of Nitrogen-15 isotopes reflects a diet High in tropical C-4 plants

High in temperate C-3 plants

High in meat

That is well balanced

2. According to climate research prior to the modern era the earth's environment has experienced:
shifts between cold and warm periods

gradual steady cooling

little to no change

gradual steady warming

hello there!

the graphics that you have attached within the question, indicates that few people in bolivia work in industry according to its labor force.

however, the graphic that is on the right side of the picture shows the gdp sector in bolivia. this gross domestic product is a macroeconomic magnitude   that shows the monetary value of all finished goods and services within a country's borders in a specific time period. in this case, the graphic is showing the monetary value in each sector -agriculture, industry and services- of bolivia in 2012.

so, although the first graphic located at the left side indicates that not so many people work in industry, this is the second most important sector according to the gdp metrics because of the monetary value that impacts on its country. it does not need to be the most valuable one. if it makes an impact on the country's economy, it will be definitely crucial to it.

the constitution gives congress the power to regulate commerce "among" the several states.

use wikipedia, i think they have this.