Science!
This is the technique used for testing ideas with observations, and generally consists of six different steps.
Scientific Method
These are accidental changes in DNA which give rise to genetic variation among individuals.
Mutations
Which of these species is most vulnerable to extinction?
a. A species with a population size of 50,000 individuals
b. A species distributed throughout North America
c. A species that is endemic to an island
d. A species that can tolerate a wide range of environmental conditions
c. A species that is endemic to an island
This describes a form of species interaction in which one species benefits, but the other is harmed.
Predation
This is an introduced species that has unregulated population growth due to an absence of limiting factors.
Invasive species
This tool expresses the cumulative area of biologically productive land and water required to provide the resources a person/population consumes and to dispose of, or recycle the waste the person/population produces.
Ecological footprint
Convergent Evolution
Which of these is a density-dependent factor that helps establish the carrying capacity?
a. Disease
b. Flood
c. Temperature extremes
d. Landslide
a. Disease
The competition between silver carp and the emerald shiner for plankton as a food source in the Illinois River is an example of this species interaction:
Interspecific competition
True or false: A non-native species is always an invasive species.
False
Which of the following statements about scientific theories is FALSE?
a. Scientific theories are conceptual frameworks that explain phenomena.
b. Scientific theories have strong support and explanatory power.
c. Scientific theories have undergone extensive and rigorous testing.
d. Scientific theories are guesses about phenomena, serving as a starting point for empirical research.
d. Scientific theories are guesses about phenomena, serving as a starting point for empirical research.
Natural selection
Humans follow this type of survivor ship curve.
Type I
These cause disease in their hosts.
Parasites
This type of succession follows a disturbance so severe that no vegetation or soil life remains from the community that had occupied the site.
Primary succession
These are the two historical events/movements that triggered a remarkable increase in population growth.
Agricultural & Industrial Revolutions
From yellow labs to corgis, all modern dog breeds are descendants of a single species, Canis lupus. This is was achieved through:
Artificial selection
This describes the relative numbers of individuals of different ages within a population.
Age structure
These break down leaf litter and other nonliving matter into simpler constituents that can be taken up and used by plants.
Decomposers
This is a type of species that exerts great influence on a community's composition and structure.
Keystone species
This experiment is one in which the scientist manipulates variables or conditions that change.
Controlled experiment
This term refers to the variety of life across species, genes, population and communities.
Biodiversity
Natality, mortality, immigration, emigration
The competition between silver carp and the emerald shiner for plankton as a food source in the Illinois River is an example of this species interaction:
Interspecific competition
Which of the following plants best represent a climax community?
a. Grasses, small herbs, and forbs
b. Shrubs and fast-growing trees
c. Shade-intolerant trees
d. Shade-tolerant trees
d. Shade-tolerant trees