Terms in this set (86)
Day-to-day condition of the Earth's atmosphere.
Average condition over long long periods.
Environmental conditions that can vary over small distances.
Gas that functions like glass in a greenhouse, allowing visible light to enter but trapping heat.
Ability to survive and reproduce enter a range of environmental circumstances.
The general place where an organism lives.
Describes not only what an organism does, but also how it interacts with biotic and abiotic factors.
Refer to any necessity of life, such as water, nutrients, light, food, or space.
Competitive Exclusion Principle
No two species can occupy exactly the same niche in exactly the same habitat at the exact time.
An interaction in which one animal captures and feeds on another animal.
An interaction on which one animal feeds on producers.
Changes in the population of a single species.
Any relationship in which two species live closely together.
Relationship between species in which. It's benefit.
Fleas, ticks, lice, and leeches live on the bodies of mammals, feeding on their blood and skin.
Relationship in which one organism benefits and the other is neither helped nor harmed.
A series of more-or-less predictable changes that occur over in a community over time.
Succession that begins in an area with no remnants of an older community.
The first species to colonize barren areas.
Disturbance affects the community without completely destroying it.
Tall trees form a dense, leafy covering.
In the shade below the anopy, shorter trees and vines form a layer.
A plant that sheds its leaves during a particular season.
Produce seed-bearing comes, and most have leaves shaped like needles which are coded in a waxy substance that help reduce water loss.
A material formed from decaying leaves and other organic matter.
Dense forests of coniferous evergreens along the northern edge
A layer of permanently frozen subsoil.
Sunlit region near the surface in which photosynthesis can occur.
Photosynthesis cannot occur.
Habitat is the benthic zone.
General term that includes both phytoplankt and zooplankton.
Ecosystem in which water either covers the soil or is present at or near the surface for at least part of the year.
Special kind of wetland, formed where a river meets the sea.
Life on a global scale
Group of similar organisms that can breed and produce fertile offspring
Group of individuals that belong to the same species and live in the same area
Assemblage of different populations that live together in a defined area
Scientific study of interactions among organisms and between organisms and their physical environment
All the organisms that live in a place together with their physical environment
Group of ecosystems that share similar climates and typical organisms
Biological influences on organisms
Physical components of an ecosystem
Organisms that use solar or chemical energy to produce food by assembling inorganic compounds into complex organic molecules
First producers of energy-rich compounds that are later used by other organisms
Captures light energy and uses it to power chemical reactions that covert carbon dioxide and water into oxygen
Chemical energy is used to produce carbohydrates
Organisms that acquire energy from other organisms
Organisms that rely on other organisms for energy and nutrients
Kill and eat other animals
Obtain energy and nutrients by eating plants
Animals that consume the carcasses of other animals that have been killed
Animals whose diets naturally include a variety of different foods that include plants and animals
Feed by chemically breaking down organic matter
Digest decomposers that live on and in detritus particles
Series of steps in which organisms transfer energy by eating and being eaten
Primary producers . Mixture of floating algae
Network of feeding interactions
Small swimming animals that feed on marine algae
Each step in a food chain or food web
Relative amount of energy or matter contained within each trophic level in a given food chain or web
Total amount of living tissue within a given trophic level
Closed loops that are powered by the flow of energy
Bacteria convert nitrogen gas into ammonia
Converting nitrates into nitrogen gas which is released into the atmosphere
Nutrient whose supply limits productivity
Allowing only certain animals with wanted characteristics to produce the next generation
Crossing dissimilar individuals to bring together the best of both organisms
Continued breeding of individuals with similar characteristics
Application of a technological process, invention, or method to living organisms
Polymerase Chain Reaction
(PCR) Making copies of a gene
Resulting molecules from combining DNA fragments
Small circular DNA molecules. Used in recombinant DNA studies
Gene that makes it possible to distinguish bacteria that carry the plasmid from those that don't
Containing genes from other species
Member of a population of genetically identical cells produced from a single cell
Process of changing a gene to treat a medical disease or disorder
Technology to study hundreds or thousands of genes at once
Analyzes sections of DNA that may have little to no function but that vary widely from one person to another
Scientific study of crime scene evidence
Two sets of chromosomes from a male parent and female parent
A cell that contains both sets of homologous pairs
A cell that contains only one set of chromosomes and one set of genes
Process when number of chromosomes in each cell is cut in half hour separation of homologous pairs in diploids
Formed when each replicated chromosome pairs with its corresponding homologous chromosome
Process where chromatids of homologous chromosomes cross over and the chromatids exchange
A fertilized egg