SAT SAT-Critical-Reading real exam prep : Section One : Critical Reading

Big earthquakes are naturally occurring events well outside the powers of humans to create or stop. An
earthquake is caused by a sudden slip on a fault. Stresses in the earth's outer layer push the side of the
fault together. The friction across the surface of the fault holds the rocks together so they do not slip
immediately when pushed sideways. Eventually enough stress builds up and the rocks slip suddenly,
releasing energy in waves that travel through the rock to cause the shaking that we feel during an
earthquake. Earthquakes typically originate several tens of miles below the surface of the earth. It takes
many years-- decades to centuries--to build up enough stress to make a large earthquake, and the fault
may be tens to hundreds of miles long. The scale and force necessary to produce earthquakes are well
beyond our daily lives. Likewise, people cannot prevent earthquakes from happening or stop them once
they've started--giant nuclear explosions at shallow depths, like those in some movies, won't actually stop
an earthquake.
The two most important variables affecting earthquake damage are the intensity of ground shaking cased
by the quake and the quality of the engineering of structures in the region. The level of shaking, in turn, is
controlled by the proximity of the earthquake source to the affected region and the types of rocks that
seismic waves pass through en route (particularly those at or near the ground surface). Generally, the
bigger and closer the earthquake, the stronger the shaking. But there have been large earthquakes with
very little damage either because they caused little shaking or because the buildings were built to
withstand that shaking. In other cases, moderate earthquakes have caused significant damage either
because the shaking was locally amplified or more likely because the structures were poorly engineered.
The amount of shaking during an earthquake is determined by

• A. the duration of the quake
• B. how well the offices and homes have been built in the region
• C. how close the epicenter of the earthquake is to the area
• D. how soon people take action to stop the earthquake
• E. the amount of damage

Each year I am reminded of our blessings as I view the ______ of food abundant at our table.

• A. plethora
• B. gluttony
• C. mixture
• D. bounty
• E. decadence

In general, new breakthroughs in scientific and biological research allow us to identify origins of many
viruses of formerly ______ origins.

• A. memorable
• B. escapable
• C. useful
• D. mysterious
• E. abstract

As the grass roots movement gained momentum, outside forces attempted to infiltrate and change the
direction of the original purpose so the sponsor recommended we adopt a ______, making it clear to the
public our motives and purpose.

• A. statement
• B. declaration
• C. manifesto
• D. invocation
• E. mandate

The Amazonian wilderness harbors the greatest number of species on this planet and is an irreplaceable
resource for present and future generations. Amazonia is crucial for maintaining global climate and
genetic resources, and its forest and rivers provide vital sources of food, building materials,
pharmaceuticals, and water needed by wildlife and humanity. The Los Amigos watershed in the state of
Madre de Dios, southeastern Peru, is representative of the pristine lowland moist forest once found
throughout most of upper Amazonian South America. Threats to tropical forests occur in the form of
fishing, hunting, gold mining, timber extraction, impending road construction, and slash-and-burn
agriculture.
The Los Amigos watershed, consisting of 1.6 million hectares (3.95 million acres), still offers the
increasingly scarce opportunity to study rainforest as it was before the disruptive encroachment of
modern human civilization. Because of its relatively pristine condition and the immediate need to justify it
as a conservation zone, this area deserves intensive, long-term projects aimed at botanical training,
ecotourism, biological inventory, and information synthesis. On July 24, 2001, the government of Peru
and the Amazon Conservation Association signed a contractual agreement creating the first long-term
permanently renewable conservation concession. To our knowledge this is the first such agreement to be
implemented in the world. The conservation concession protects 340,000 acres of old-growth Amazonian
forest in the Los Amigos watershed, which is located in southeastern Peru. This watershed protects the
eastern flank of Manu National Park and is part of the lowland forest corridor that links it to
Bahuaja-Sonene National Park. The Los Amigos conservation concession will serve as a mechanism for
the development of a regional center of excellence in natural forest management and biodiversity science.
Several major projects are being implemented at the Los Amigos Conservation Area. Louise Emmons is
initiating studies of mammal diversity and ecology in the Los Amigos area. Other projects involve studies
of the diversity of arthropods, amphibians, reptiles, and birds. Robin Foster has conducted botanical
studies at Los Amigos, resulting in the labeling of hundreds of plant species along two kilometers of trail in
upland and lowland forest. Michael Goulding is leading a fisheries and aquatic ecology program, which
aims to document the diversity of fish, their ecologies, and their habitats in the Los Amigos area and the
Madre de Dios watershed in general.
With support from the Amazon Conservation Association, and in collaboration with U.S. and Peruvian
colleagues, the Botany of the Los Amigos project has been initiated.
At Los Amigos, we are attempting to develop a system of preservation, sustainability, and scientific
research; a marriage between various disciplines, from human ecology to economic botany, product
marketing to forest management. The complexity of the ecosystem will best be understood through a
multidisciplinary approach, and improved understanding of the complexity will lead to better management.
The future of these forests will depend on sustainable management and development of alternative
practices and products that do not require irreversible destruction. The botanical project will provide a
foundation of information that is essential to other programs at Los Amigos. By combining botanical
studies with fisheries and mammology, we will better understand plant/animal interactions. By providing
names, the botanical program will facilitate accurate communication about plants and the animals that
use them. Included in this scenario are humans, as we will dedicate time to people-plant interactions in
order to learn what plants are used by people in the Los Amigos area, and what plants could potentially
be used by people. To be informed, we must develop knowledge. To develop knowledge, we must collect,
organize, and disseminate information. In this sense, botanical information has conservation value.
Before we can use plant-based products from the forest, we must know what species are useful and we
must know their names. We must be able to identify them, to know where they occur in the forest, how
many of them exist, how they are pollinated and when they produce fruit (or other useful products). Aside
from understanding the species as they occur locally at Los Amigos, we must have information about their
overall distribution in tropical America in order to better understand and manage the distribution, variation,
and viability of their genetic diversity. This involves a more complete understanding of the species through
studies in the field and herbarium. The author mentions areas outside the Los Amigos watershed
primarily in order to

• A. draw a comparison between work in those areas and work in the Los Amigos area.
• B. praise the Peruvian government for its other conservationist undertakings.
• C. underscore the interrelatedness of the ecosystems.
• D. emphasize that Los Amigos is the most pristine locale.
• E. imply that his future research will focus on these areas.