stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
ENVIRSCI CH3 Flashcards | StudBud
Explore
/
ENVIRSCI CH3
ENVIRSCI CH3
23 terms
·
StudBud Administration
·
542 plays
Imported from external platform
Flashcards
23 cards
F
Practice quiz
P
Host live
L
Questions
23
Answers
1
Select all that apply. Ecosystem services include:
Nutrient cycling and decomposition
Photosynthesis & food production, carbon sequestration + oxygen production
Pollination & plant propagation
Water filtration, storage and irrigation
2
Conserving biodiverse habitats in biodiversity hotspots is a good way to protect endangered endemic species.
True
False
3
Biodiversity is best defined as...
The homogenity of life on Earth including species, genetics and ecologies
The variety of life on Earth in terms of species, genetics and ecologies
General attributes of biological uniqueness across time and space
The similarity of species on Earth, based on chemistry, science and physics
4
Natural selection is best defined as...
DNA influencing individual traits
The process of organisms adapting to their environments to leave offspring
Gene frequency transferring from one generation to the next
Non-random influences affecting survivability
5
Ecosystems services refers to the monetary value of natural resources in capitalist economies.
False
True
6
Extirpation is best defined as...
Species that are locally extinct in one geographic area but found elsewhere
The reintroduction of extinct species recovered from genetic coding
Species that are fully extinct
Undefined species at risk in their home territories
7
Some tools available to support conservation initiatives include...
Conservation genetics and tracking
Conservation finance and solutions like ecotourism, debt for nature etc.
Designated protected areas such as parks, refuges, preserves and reserves
Legal protections such as national laws and international treaties
8
Some individual actions that support biodiversity protection include... check all that apply:
Purchasing products labelled with sustainability certifications (e.g. MSC)
Taking steps to improve species habitat in your backyard and communities
Refusing to purchase products that are made from endangered species
Participating in citizen science and advocacy efforts to protect nature
9
Genetic, species and ecological diversity detract from the abilities of ecosystems to function and adapt.
True
False
10
Single-species conservation programs focus on ___.
multiple and diverse species
rarely used for less visible or valued species
successfully protecting some high-profile species
an individual species
11
IUCN data (2016) suggests that the top three threats to biodiversity are:
Dams & fires, climate change and human disturbance (war, recreation)
Overharvesting, energy production and transportation infrastructure
Overharvesting, agriculture and urban development
Invasive species, pollution and aquaculture
12
Different types of biodiversity include... check all that apply:
Mono-crop agriculture and single species animal agriculture
Ecological diversity and variety within ecosystems, commmunities, habitats
Species diversity including richness (how many) and eveness (abundance)
Genetic diversity among individuals and species
13
Evolutionary biology helps to... choose all that apply:
Understand the diversity of life on earth and how species change over time
Understand selective pressures on genetic traits and natural selection
Understand human processes of artificial selection over time
Understand mass extinction events over geological time
14
A management strategy protecting an ecosystem as a whole in an effort to protect the species that live there is called:
ecosystem conservation
habitat conservation
keystone species conservation
biodiversity conservation
15
The various levels of species at risk of extinction, ranging from least concern to extinct, are called...
Threatened
Imperiled
Embargoed
Endangered
16
Genetic diversity refers to heritable variation among populations or within a species at a whole.
True
False
17
Co-evolution occurs when two species each provide selective pressure that determines which traits are naturally selected
False
True
18
An endemic species is one that...
Has value to humans in terms of its caloric value
Is native to a particular area and not naturally found elsewehere
An endangered species at high risk of becoming extinct
A non-native species introduced by humans that impacts on native species
19
Habitat fragmentation refers to... select all that apply:
Introduction of non-native species to improve habitats for human activities
Human actions creating isolated populations increasing pressure on species
The process driving small isolated communities & risk of species extinction
Creating a patchwork of unsuitable habitats that impact species diversity
20
Invasive species refers to...
Native species endemic to a specific habitat
Non-native species causing economic/environmental harms to the environment
Types of natural selection applying selective pressures impacting traits
Rare and endangered species found nowhere else
21
The science concerned with preserving biodiversity is called conservation biology.
True
False
22
5 previous historical extinction events are linked to natural causes, including an asteroid impact 65 million years ago.
False
True
23
Artificial selection best describes a process in which...
Genetic frequency changes over time due to loss of variants
Humans decide individual breeding characteristics to favor desired traits
Small subsets of isolated genetics reduce overall genetic diversity
Populations reduced in size by loss of genetic variation
