Show:
Ecosystems
Trophic Levels
Populations
Nutrient Cycles
Human Impact
100
What does Biotic mean?
What is a living, or previously living organism.
100
What is the lowest trophic level? (Be specific)
What is Autotroph
100

What is group of organisms of the same species in the same place at the same time?

population

100
What effect are humans having on the long term carbon cycle?
What is combustion leads to warming and marine acidification.
100
Name two main impacts humans have on the ecosystem
What is habitat destruction, disruption of the carbon cycle, and overuse of resources, pollution
200
What is an ecosystem?
What is all living and non-living organisms in an area.
200
What is the difference between a food web and a food chain?
A food web is very simple with few levels, whereas a food web can get very complex.
200

What is the total population that can be surrounded by resources in a given ecosystem?

 carrying capacity

200
What are the four major nutrient cycles?
What is Water, Carbon, Nitrogen, Phosphorous
200
What type of respiration do animals undergo in an environment without oxygen?
anaerobic (makes 2 ATP)
300
Name two abiotic factors.
What is Nutrients, Water, Soil, and Air
300
What is at the top of the energy pyramid?
apex predator, carnivore
300
What type of growth is a population experiencing if it is not being limited by any outside factors?
exponential growth
300
What process in the carbon cycle draws CO2 out of the air?
What is photosynthesis
300
How do humans disrupt the long-term carbon cycle?
What is burning fossil fuels
400
What does an omnivore eat?
both plants and animals
400
Explain why food chains do not usually exceed 3 to 4 levels.
Higher trophic levels have less energy and, therefore, can support fewer organisms.
400
name 3 factors that influence the population size
What is birth rate, death rate, immigration, emigration, growth rate, resource availibility
400
Which cycle is affected when farmers put fertilizer on their crops?
nitrogen
400
What is currently happening to the human population?
It is growing exponentially (nearing 8 billion people)
500
What does primary succession have that secondary does not?
exposed rock, first stage is moss/lichen OR volcanic eruption
500
Can an area support more herbivores or carnivores?
herbivores
500
Draw a logistic growth curve
s shaped
500
What process that plants and animals do releases CO2 into the atmosphere?
respiration
500
What happens to a field after it stops being farmed?
secondary succession