Because desert would contain little organic material, their soil profiles have horizons.

The correct answer is:  "B - horizons or "C-horizons" .

           →  primarily "B-horizons"

If there are answer choices, and there is an answer choice of:

        "B-horizons or C-horizons" ;  then choose this.

If there are answer choices of:  "select all that apply" :

   then select both:  "B-horizons" ;  and:  "C-horizons" .

If there is an answer choice that incorporates:

 "Both:  "B-horizons" and "C-horizons" are correct" ;'

    then choose that one.

If you can only choose one, then choose:  " B-horizons " .

Note that:  "B-horizons" and "C-horizons" do not necessary refer to the answer choice, per se .

Rather, as per the U.S.A. soil classification systems,

soil horizons, from the top to the bottom, are generally classfied as:

  O-horizon (top soil)

  A- horizon

  E-horizon (included in some cases).

  B- horizon (lots of nutrients).

  C horizon  (may be rocky or sandy).

Hope this helps!

Best wishes!

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u

one part of the electromagnetic spectrum that arrives on earth as solar radiation from the sun is the visible spectrum. wavelengths of the visible spectrum combine to form what we refer to as

answer - d) ultraviolet radiation.

violet /   380–450 nm / 668–789 thz

violet is number 1 in the chart of visible light.