Why are scientists concerned about the loss of species as a result of human activities? why would the extinction of other species negatively affect human society?

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a.one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b.one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c.one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.

The main ingredient of magma is a pahoehoe. b silca c dissolved gases d obsidian

What are some possible consequences of preventing prescribed burns and natural wildfires