PBIO 1000 EXAM 1 QUESTIONS WITH VERIFIED ANSWERS
Biosphere - Answers - Consists of all life on Earth and all parts of the Earth in which life
exists, including land, water, and the atmosphere.
Biome - Answers - A group of ecosystems that share similar climates and typical
organisms
Ecosystem - Answers - A system formed by the interaction of a community of organisms
with their physical environment
Community - Answers - assemblage of different populations that live together in a
defined area
Populations - Answers - groups of individuals that belong to the same species and live
in the same area
Niche vs. Habitat - Answers - The role a species plays in the ecosystem is called its
niche. A habitat is the physical environment in which a species lives.
Movement of energy ecosystems - Answers - sun > producers > consumers >
decomposers
Three broad categories of biomes - Answers - terrestrial, freshwater, marine
What is biosphere 2? - Answers - the experiment in Arizona attempting to make an
independent second biosphere
What was one success of biosphere 2? - Answers - they successfully stayed inside for
the duration of the experiment
What is one failure of biosphere 2? - Answers - no enough oxygen was naturally
created, so some was pumped in
Define biodiversity + the three levels - Answers - the variety of life in an ecosystem.
Three levels + genetic diversity, species diversity, and ecosystem diversity. Diversity
allows for more natural sustainability.
What went wrong on easter island? - Answers - the tree's all died lol and then no one
planted them back so those muggs weren't living v sustainably. Eventually most of them
died bc they couldn't fish without wood
Biosphere - Answers - Consists of all life on Earth and all parts of the Earth in which life
exists, including land, water, and the atmosphere.
Biome - Answers - A group of ecosystems that share similar climates and typical
organisms
Ecosystem - Answers - A system formed by the interaction of a community of organisms
with their physical environment
Community - Answers - assemblage of different populations that live together in a
defined area
Populations - Answers - groups of individuals that belong to the same species and live
in the same area
Niche vs. Habitat - Answers - The role a species plays in the ecosystem is called its
niche. A habitat is the physical environment in which a species lives.
Movement of energy ecosystems - Answers - sun > producers > consumers >
decomposers
Three broad categories of biomes - Answers - terrestrial, freshwater, marine
What is biosphere 2? - Answers - the experiment in Arizona attempting to make an
independent second biosphere
What was one success of biosphere 2? - Answers - they successfully stayed inside for
the duration of the experiment
What is one failure of biosphere 2? - Answers - no enough oxygen was naturally
created, so some was pumped in
Define biodiversity + the three levels - Answers - the variety of life in an ecosystem.
Three levels + genetic diversity, species diversity, and ecosystem diversity. Diversity
allows for more natural sustainability.
What went wrong on easter island? - Answers - the tree's all died lol and then no one
planted them back so those muggs weren't living v sustainably. Eventually most of them
died bc they couldn't fish without wood
