In what form is iron usually present in the human body?
A) associated with proteins
B) free Fe3+ ions
C) free Fe2+ ions
D) free Fe atoms
E) Iron is distributed among all of the above forms in the body.
A
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Salt from the region of the Aral Sea is being blown onto the alpine glaciers of the Himalayas, and is causing them to melt at faster than normal rates
Indicate whether the statement is true or false
Prograding delta deposits differ from turbidity current deposits because ____
a. delta deposits coarsen upwards, with fine sediments on bottom and coarse sediments on top b. turbidity current deposits coarsen upwards, with fine sediments on bottom and coarse sediments on top c. delta deposits fine upwards, with coarse sediments on bottom and fine sediments on top d. deltas are not subject to marine processes e. turbidity currents are not subject to marine processes
You are in a low-elevation area that receives an average of 51 cm (20 inches) of precipitation per year, with temperatures that are much colder in winter than summer. Which one of the following biomes are you most likely to be in?
A) Subtropical moist broadleaf forest B) Temperate grassland C) Mediterranean forests, woodlands, and scrublands D) Desert
Where in the thunderstorm would you be most likely to find mammatus clouds?
A) Letter F B) Letter E C) Letter C D) Letter D