ecosystems
Ecology
sustainability & Biomass
ecological balance in an ecosystem
Matter cycling
100
What is a producer
a living this that makes its own food
100
What is a food chain
a diagram or model that shows how energy and nutrients flow from one organism to another in an ecosystem.
100
what is a carnivore
An animal that eats meat for its diet
100
what is an ecosystem
A community of living things that interact with each other
100
what is the nitrogen cycle
It is how nitrogen moves through living and non-living things
200
what is the difference between a food chain and a food web
A food chain shows one single path of energy flow.
A food web shows many connected food chains in an ecosystem.
200
Name four species of a Carnivore
Lion
cheetah
leopard
tiger
200
what are three examples of abiotic factors
Sunlight,water and temperature
200
What are some ways humans can negatively affect the water cycle
Pollution
Urbanization
Overuse of water
200
Describe the water cycle
The cycle of processes by which water circulates between the earth's oceans, atmosphere, and land, involving precipitation as rain and snow, drainage in streams and rivers, and return to the atmosphere by evaporation and transpiration.
300
what are some differences between biotic and abiotic factors
Biotic factors include plants, animals, fungi Abiotic factors are non- living parts of an ecosystem. Biotic factors interact with each other (like in the food chain) while Abiotic factors affect how living things survive and grow
300
What are the ways carbon can enter the earth naturally and explain how each way does it
Volcanic eruptions: When volcanoes erupt, they release carbon dioxide (CO₂) from deep inside the Earth into the atmosphere.
Respiration: All living things (plants, animals, fungi, etc.) breathe or break down food through cellular respiration.
Decomposition:When plants and animals die, decomposers (like bacteria and fungi) break them down.
300
what is an ecologic balance and what are 2 ways humans can disrupt it
Ecological balance is a state of balance in the community of organisms in an ecosystems
Humans can disrupt this by: Deforestation and pollution
300
what are 4 natural ways that Ecological balance can be disrupted
Volcanic eruptions
Droughts
wildfires
Floods
300
Carbon gets cycled in an ecosystem
Carbon is cycled in an ecosystem when plants take in carbon dioxide from the air during photosynthesis to make food. Animals then eat the plants and take in that carbon. When plants and animals breathe, die, or release waste, carbon goes back into the air or soil. Decomposers help break down dead things and return carbon to nature
400
give an example of Mutualism in the animal kingdom and explain how both are positively affected
Clownfish and sea anemone. Sea anemone provides shelter for clownfish, clownfish protects anemone from predators and provides nutrients from the clownfish waste
400
In this ecosystem which of these organisms would be a a keystone species and why
The grass would be a keystone species because if there were no grass then the elk,mouse and grasshopper population would decrease and with these animals decreasing there would not be enough food for the secondary consumers (snake and eagle) which overtime might cause an extinction of the organisms in this ecosystem
400
You are the park ranger of this ecosystem and U noticed that grass population is lower than usually,the Antelope and grasshopper population is higher than normal and there are 0 cheetahs in the park but someone decides to put bees in the park so that they may pollinate the flowers so that they can be more grass is this a good idea? why or why not ?
No. Because if if they introduce bees to polunate the grass to increase the population the grasshoppers and antelope will eat it again reducing the population of the grass once again and possibly incrasing the population of the grasshopper and antelope even more
400
A new predator is introduced into an ecosystem. Predict and explain two possible effects this could have on the existing food web
1 Decrease in prey population:
The new predator may start hunting a species that already has predators, causing that prey's population to decline quickly
2 Disruption of predator competition:
The new predator could compete with native predators for the same food.
400
What might happen to an ecosystem if decomposers were removed from the nitrogen or carbon cycle? Explain your reasoning
If decomposers were removed, dead plants and animals wouldn’t break down, so important nutrients like carbon and nitrogen would not return to the soil. This would cause plants to run out of the nutrients they need to grow, and animals would eventually have less food
500
Briefly explain how keeping a lot of cows can contribute to global warming
cows can contribute to global warming because cows release a gas called methane (CH₄), which is a powerful greenhouse gas and it is happens because During digestion, methane gas is produced and released when cows burp and fart.This methane goes into the atmosphere and traps heat.
500
What is the difference between a scavenger and a decomposer and how do they both contribute to an ecosystem
A scavenger is an animal that eats dead animals or plants (but doesn’t break them down fully).A decomposer is a microorganism or fungus that breaks down dead material into nutrients that return to the soil.
Scavengers help by cleaning up dead bodies of animals and preventing disease from spreading.
Decomposers break down what’s left and recycle nutrients back into the soil, helping plants grow
500
What is a biomass pyramid and why is a pyramid shape used to show this
A biomass pyramid is a diagram that is used to graph the energy transfer between organisms
A pyramid shape is used because as you move up the pyramid the energy decreases and only 10 percent of the energy is retained during each transfer
500
what are all the example of species interactions and which one benefits from each interactions
Predation (+) (-)
Competition (-) (-)
Mutualism (+) (+)
Commensalism (+) (0)
Parasitism (+) (-)
500
how does Nitrogen get moved from the earth's soil and back into the atmosphere
When plants and animals die, decomposers (like bacteria and fungi) break down their bodies.This releases nitrogen into the soil in the form of ammonia,Special bacteria in the soil convert ammonia into nitrates which plants can absorb and use to grow.Other bacteria in the soil called convert nitrates back into nitrogen gas which is then released into the atmosphere