which of these pieces of evidence did alfred wegener's original theory of continental drift have access to?

a)seafloor spreading at mid-ocean ridges

b)reversing paleomagnetism in rocks on the ocean floor

c)evidence of ancient tropical swamps in cold regions of north america

d)
a seafloor that was geologically active with earthquakes, volcanoes, and mountain chains

What are the headings of a data table

Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim

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.