(D) Methane
(E) CFCs
- Heap leaching could be a process used in the extraction of (A) copper
(B) nickel
(C) gold
(D) uranium
(E) All of the above
- After a recent storm, an APES class took a field trip to a storm drain outlet
entering the Pacific Ocean at Ballona Creek, in southern California. They
carefully collected water samples and brought the samples back to the lab.
Alpha group took 100.00 mL of the collected water and filtered it through a
1.2 μm Millipore™ glass fiber filter. The filter was carefully transferred to
a premassed stainless steel crucible and placed into a 105°C oven for 24
hours. The following is a hypothetical set of data from Alpha group: Weight
of crucible + filter + residue after 24 hrs at 105°C = 100.000 g
Weight of crucible + filter = 80.000 g
What is the total suspended solid amount measured in mg · L–1?
(A) (80.000/100.00) × 100%
(B) 100.00 – 80.00
(C)
(D)
(E)
- If a plant stores 1,000 units of energy from the sun, and a field mouse eats
the plant and is then eaten by a snake, who is then eaten by a bird, who is
then eaten by a carnivore, how much of the original 1,000 units of energy
will be available to the carnivore?
(A) 90
(B) 9
(C) 1
(D) 0.9
