Eco 1
The process by which nitrogen gas is made into Ammonia by the bacteria in root nodules of plants
Nitrogen Fixation
These organisms take in energy from the sun to make energy-rich compounds that are later used by other organisms
primary producers/producers
A third level consumer can also be classified as a ___________ because it primarily eats __________.
Predator/carnivore. Meat/other consumers
How do animals get their nitrogen if they cannot get it from the air?
The process by which bacteria convert nitrates into nitrogen gas
denitrification
The process by which dead organisms are broken down by bacteria which releases carbon dioxide into the atmosphere
Decomposition
The process plants use to turn water and carbon dioxide into carbohydrates and oxygen
photosynthesis
____________ flows in one-way stream, from primary producers to various consumers
energy
List the three main ways carbon dioxide returns to the atmosphere in the carbon cycle?
Respiration, Decomposition, Human Activity (burning of fossil fuels.
Each step in a food chain or food web is called a _____________ Level.
trophic
Was once or is currently living
biotic factors
Organism that obtains food by consuming other living things
heterotroph or (consumer)
A series of steps in which organisms transfer energy by eating and being eaten.
food chain
In an ecosystem __________ is recycled, meaning it is conserved.
matter
liquid water turning into a gas is called?
evaporation.
Never was or never will be living
abiotic factors
These organisms obtain energy by eating only primary producers
herbivores also considered to be primary consumers
____________ the amount of energy transferred from one trophic level to the next
10%
Water falling from the clouds is called?
precipitation
a group of organisms that produce their own food. Note: Not producer, what is the other word?
autotrophs
The process by which bacteria convert ammonia to nitrates available for plant uptake
Nitrification
How is a food web different then a food chain?
A food chain shows a simple, linear flow of energy from one organism to another, while a food web is a complex network of interconnected food chains, representing the various feeding relationships within an ecosystem.
What are the levels of organization within an ecosystem? Put them in order from smallest to largest.
1.____2.____3.____4.____
organism, population, community, ecosystem.
Explain the law of conservation of mass, and the law of conservation of energy and how they relate to ecosystems.
The law of conservation of mass states that matter cannot be created or destroyed, only transformed, while the law of conservation of energy states that energy cannot be created or destroyed, only converted from one form to another. These laws are fundamental to understanding ecosystems, as they govern the cycling of matter and energy through living systems. i.e. water cycle, carbon cycle, and nitrogen cycle.
What factors limit population growth? Name at least 4
Food, water, climate, weather, space, shelter