What does the term carbon footprint refer to
a)the number of nitrogen atoms that become carbon atoms due to photosynthesis
b) the amount of carbon dioxide removed from the air through cellular respiration
c) the number of carbon atoms used to make the organic matter in an organism
d) the mount of carbon dioxide a person releases into the atmosphere
i think it is d just making sure

Astudy was performed on 20 trees to test the effectiveness of a new fertilizer. the results of this specific study is brought into question. what would possibly improve the reliability of the results?

The movement of tectonic plates in two different locations is shown below: two blocks labeled location a and location b are shown. at location a the top layer of the block shows two horizontal arrows pointing towards each other. small dunes are shown in the middle between the two arrows. the block labeled b has a vertical line in the middle. on the left of the line there is an arrow pointing down. on the right of the vertical line there is an arrow pointing up which statement is most likely true? subduction may occur in both locations. earthquakes may occur in both locations. subduction may occur in location a only and a volcanic eruption may occur in location b only. an earthquake may occur in location a only and a volcanic eruption may occur in location b only.

Collin would like to use the data a coworker has entered in a database. the problem is the coworker's database software is different from collin's. collin should