then guess.
Because it is not expected that all test takers will complete this section, do
not spend too much time on difficult questions. First answer the questions you
can answer readily. Then, if you have time, return to the difficult questions later.
Do not get stuck on one question. Work quickly but accurately. Use your time
effectively.
Directions: For each question or statement, select the one lettered choice
that is the best answer and fill in the corresponding circle on the answer
sheet.- The diagram below represents a phylogenetic tree of the evolution of even-
toed ungulates (e.g., cattle, pigs, giraffes, camels, and deer):
The most likely explanation for the branching pattern seen in the circled
region is that (A) environmental changes caused extinction
(B) inbreeding led to speciation
(C) no speciation occurred
(D) speciation was influenced by environmental change
(E) only the best-adapted organisms survived from generation to generation- Two lightbulbs are for sale—a 15-watt compact fluorescent light
(CFL) and a 60-watt incandescent. You know that a 15-watt compact
fluorescent lightbulb will produce the same amount of light as a 60-watt
incandescent lightbulb. If electricity costs $0.10 per kWh and you run
each lightbulb for 8,000 hours, how much money will you save in the
cost of electricity by buying the compact fluorescent lightbulb?
(A) $4.00
(B) $8.00
(C) $12.00
(D) $36.00