Earth's History
This word describes the complete disappearance of a species from Earth.
Extinction
This word describes a trait that helps an organism survive in its environment.
Adapation
This word describes a situation where two organisms both need the same resource at the same time in the same location.
Competition
This word describes the illegal hunting of animals.
Poaching
This word describes the breakdown of organic matter into simpler substances.
Decomposition
Name one natural and one human-induced cause of extinction.
Natural: natural disasters, natural climate fluctuations, competition, etc.
Human-Induced: Poaching, pollution, climate change, introduction of invasive species.
This word describes differences between individuals of the same species.
Variation
This word describes the role that an organism has in its environment.
Niche
This type of organism causes harm and is not originally from an area.
Invasive species
This word describes burning something.
Combustion
The earliest plant species depended on this gas in the atmosphere to make food for themselves.
Carbon dioxide
This word describes an organism or species that multiple different lineages have in common.
Common ancestor
This word describes a gradual change in an ecosystem over time.
Succession (or ecological succession)
Increase
This word describes an organism that does not need oxygen to do respiration.
Anaerobic
The evolution of which organisms resulted in an increase in atmospheric oxygen?
Cyanobacteria
This type of diagram shows evolutionary relationships among organisms.
Phylogenetic tree
This is decreased by the presence of different niches in an ecosystem.
Competition
This factor can help to make an ecosystem stable despite changing conditions.
Biodiversity
The extraction and burning of fossil fuels removes carbon from this sphere.
Geosphere
Name on abiotic and one biotic factor that led to the extinction of the dinosaurs after the asteroid impact.
Abiotic: Drop in global temperatures, decrease in the amount of solar energy, natural disasters.
Biotic: Decrease in plant life and/or photosynthesis, collapse of food chains and food webs.
List three pieces of evidence that scientists can use to determine relatedness between different species.
- DNA
- Embryology
- Body structures
- Geographical ranges
Oxygen is a limiting factor for organisms that rely on this process to obtain energy.
Aerobic respiration
These two factors led to the decline of the Whooping crane populations and extinction of the Passenger pigeon populations.
Overhunting and habitat destruction (deforestation)
Photosynthesis primarily involves these two spheres of Earth.
Biosphere and atmosphere