Evidence is observable. It should be something you see (or are able to sense in some other way) and can measure. Use the word bank to complete the following paragraph describing evidence that supports your claim. has been at Harvard Forest every year in the data series (1992-2015), with a range of gC/m2/year to gC/m2/year.
There is a negative in the graph as well, shown by the of the line of best fit.
word bank : negative slope , positive slope , -612 , -612 , NEE, positive , negative , -36 , trend , -36