Ecosystems and Food Webs
Population Growth and Limiting Factors
Evolution and Natural Selection
100
What is the role of nitrogen fixing soil bacteria?
To create AMMONIMUN or NH4, a useable form of nitrogen for plants.
100
What does the line represent ?
Carrying Capacity
100
How did the color of moths changed after the industrial revolution?
Moths were light before but darker after
200
Which abiotic process adds carbon dioxide to the atmosphere ?
Burning/Combustion of fossil fuels adds carbon dioxide to the atmosphere.
200
What kind of population growth is represented ?
Logistic Growth
200
What scientific process allowed the Moth population to evolve?
Natural Selection
300
Why do plants need nitrogen ?
Plants need nitrogen to create PROTEINS and DNA
300
What are the 3 factors that limit a populations growth?
Food, Water, Shelter
300
What happened to light colored moths after the industrial revolution?
They did not blend in with their environment and were hunted.
400
Why cant these 2 species grow together ?
They occupy the same NICHE which means they are in COMPETITION for RESOURCES
400
When a population has unlimited resources? What type of growth is exhibited?
Exponential Growth
500
What role do decomposers play in an environment ?
Recycling of matter
500
Population C was just introduced into the environment, are they experiencing exponential or logistical growth ? WHY
EXPONENTIAL GROWTH occurs when a species has UNLIMITED RESOURCES and NO NATURAL PREDATORS.
500
What is Natural Selection ?
Natural Selection states that the organism with a SELECTIVE ADVANTAGE or beneficial trait will SURVIVE a SELECTIVE PRESSURE and REPRODUCE. They pass on the same beneficial traits to all their offspring known as REPRODUCTIVE FITNESS.