Ch. 10.2 Flashcards
Population
Group of organisms of the same species living in the same area
Natural selection
The process by which individuals with favorable traits survive and reproduce
What are the 4 steps to natural selection
Overpopulation
Genetic variation
Survival
Successful reproduction
Overproduction
When an organism has more offsprings then can survive to adulthood
Genetic variation
When each organism in a population is different.
Adaptation
Traits that help an organism survive
What is survival affected by(4)
Food, water, living space, survival to mate
Successful reproduction
Must be adapted to an environment and must attract a mate
Camo will protect what
The animal from predators
Biome
Major regional or global community of organisms
Tundra
Cold and dry
Desert
Driest biome. Really hot during the day and cold at night
Grassland
Grasses dominate grassland biome
Taiga
Aka boreal forest. Northernmost forest biome. Long cold winters and shirt summers
Forest biome
Tropical rainforest, temperate rainforest, and temperature deciduous forests
Wetlands
Areas of land covered by fresh water for all or part of the year
What abiotic factors affect a freshwater ecosystem(5)
Temp, water depth, water flow rate, light levels, oxygen levels
Estuary
Partly enclosed body of water where a river flows into an ocean
Over harvesting
When rate of fishing is higher then rate of reproduction
Artificial reef
Human made structure that is sunken into a costal ocean system
