Question 4
why is it important that farmers plant crops during the winter that improve the levels of nitrogen in the soil?
these crops can fix nitrogen into usable nitrates.
these crops have root nodules that contain bacteria.
these crops produce fruit that quickly decomposes into usable nitrogen.
these crops all use nitrogen in their specialized photosynthesis process. question 5
in the chemical equation below, what molecule does the chemical formula c6h12o6 represent?
light energy + 6 h2o + 6 co2 → c6h12o6 + 6 o2
cellulose
starch
glucose
sucrose

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.

Draw the farm's ppf for corn and beef. draw a point that shows an inefficient combination of corn and beef. label ita. draw a point that shows an unattainable combination of corn and beef. label itb. draw a point that shows an efficient combination of corn and beef. label itc.

The structure of a dna molecule is best described as a. one long strand of nucleic acids b. two strands of dna nucleotides joined by hydrogen bonds c. two strands of amino acids joined by hydrogen bonds d. one long strand of amino acids