Ecosystems and Matter
This is the term for all the living and nonliving things that interact in an area.
An Ecosystem
Which of these contain most of Earth’s water?
A. oceans
B. rivers
C. lakes
D. glaciers
A. oceans
Which is not a threat to living ocean resources?
A. overfishing
B. oil spills
C. evaporation
D. pollution
C. evaporation
DOUBLE POINTS!!!
Which division of the geologic time scale is the longest?
A. eon
B. period
C. era
D. epoch
A. eon
Differences that exist naturally among members of a population or species are called ____________.
A. Mutation
B. Variation
C. Law of superposition
D. Natural Selection
B. Variation
In this state, matter has neither a definite shape nor a definite volume.
A gas
An area of land that drains into a river or lake is called
A. an ecosystem
B. a wetland
C. a watershed
D. a habitat
C. a watershed
Which are the main producers in the ocean?
A. algae and other microscopic organisms
B. seaweed growing on the ocean floor
C. sea grasses growing on the ocean floor
D. microorganisms living near vents in the
ocean floor
A. algae and other microscopic organisms
Which of these groups of animals appeared on Earth
most recently?
A. reptiles
B. amphibians
C. mammals
D. fish
D. mammals
Which of these is least likely to show common ancestry?
A. homologous structures
B. vestigial structures
C. DNA
D. analogous structures
D. Analogous Structures
These organisms make their own food using sunlight.
Producers
DOUBLE POINTS!!!!
Which of these diseases can be treated with antibiotics?
A. lyme disease
B. the common cold
C. influenza
D. AIDS
A. Lyme disease
A clear example of point-source pollution is
A. trash floating in ocean water
B. feedlots wastes in a river
C. oil spilling from a supertanker
D. salts from irrigation
C. oil spilling from a supertanker.
All of the following conditions help preserve organisms as
fossils EXCEPT __________.
A. quick burial by sediments
B. protection from scavengers
C. hard parts
D. activities of microorganisms
D. activities of microorganisms
Which of the following best describes an adaptation?
A. a trait that helps an organism survive
B. any change in a gene or a chromosome
C. any trait of an organism
D. a trait that is passed from a parent to its offspring
A. A trait that helps an organism survive
The ability of a substance to be hammered into thin sheets is known as this.
Malleability
Ten people became sick with the flu after attending a school dance. What is the scenario that would best explain how the people got sick?
A. contact with environmental sources
B. contact with an infected animal
C. contact with a contaminated object
D. contact with an infected person
DOUBLE POINTS!!!
What is one way scientist analyze the health
of a river?
A. by measuring its depth
B. by measuring the speed at which the river flows
C. by measuring its dissolved oxygen content
D. by measuring the distance the river travels to reach an ocean
C. by measuring its dissolved oxygen content.
Determining the order of events and the relative age of
rocks by examining the position of rocks in a sequence is
called __________.
A. absolute dating
B. relative dating
C. radiometric dating
D. relative carbon dating
B. relative dating
Which of these would not be used by a scientist to determine the evolutionary relationship between two species?
A. bone structure
B. fossils
C. DNA
D. population size
D. Population Size
DOUBLE POINTS!!!
This type of relationship benefits one organism and doesn’t harm or help the other.
Commensalism
How are estuaries different from lakes or the ocean?
A. Estuaries contain only salt water.
B. Estuaries contain only freshwater.
C. Estuaries contain both saltwater and
freshwater.
D. Estuaries are not bodies of water.
C. Estuaries contain both saltwater and freshwater.
Which factors are most characteristic of a healthy body of water?
A. low salinity and high turbidity
B. high pH and low dissolved oxygen
C. high temperature and large quantities of algae
D. low turbidity and high dissolved oxygen
D. low turbidity and high dissolved oxygen
Geologic time is divided best into units based on
________.
A. geologic changes
B. fossils and rocks
C. types of life-forms living during certain periods
D. types of trilobites
C. types of life-forms living during certain periods.
DOUBLE POINTS!!!
During the industrial revolution, the tree bark around major cities darkened. The population of peppered moths went from being predominantly speckled to being predominantly black.
What process would account for this change?
A. Continental Drift
B. Sexual Reproduction
C. Natural Selection
D. Mutation
C. Natural Selection