[Part 2]- B16- Organising an ecosystem 🥬🐌🦉 Flashcards
What is the carbon cycle ?
- the carbon cycle, is the processes and events involved in recycling carbon in the environment.
With reference to the carbon cycle, describe how carbon is first brought in
- carbon can only enter the carbon cycle, by photosynthesis- this brings carbon into the cycle.
- in photosynthesis, carbon dioxide is combined with water, to make the sugar: glucose. photosynthesis uses [sun] light energy- and it’s carried out by plants.
Describe how carbon returns to the atmosphere
- carbon dioxide then returns back to the atmosphere by aerobic respiration- respiration is carried out by every single living organism.
- [the carbon cycle starts with carbon dioxide in the atmosphere;]
Briefly describe how carbon is brought it, and then returns to the atmosphere
- carbon can only enter the carbon cycle, by photosynthesis- this brings carbon into the cycle.
- and, carbon dioxide then returns back to the atmosphere, by aerobic respiration
- Fill in the gaps: In photosynthesis, ______ dioxide is combined with ______, to make the sugar: glucose.
- and photosynthesis uses ___ _____energy- and it’s carried out by ______.
- In photosynthesis, carbon dioxide is combined with water, to make the sugar: glucose.
- and photosynthesis uses [sun] light energy- and it’s carried out by plants.
Describe the water cycle 💧
- almost all the water found on Earth, is found in oceans- this is salt-water
1) energy from the sun, causes the water to evaporate from the surface of the sea
2) the water vapour, now travels into the air and cools down.
3) ; when it cools, the water vapour condenses to form clouds
4) the water in the clouds, then falls to the ground as precipitation.
5) and once the water hits the ground, some of it evaporates back into the atmosphere as water vapour
6) though some of this water, passes through rocks, forming aquifers; a lot of the water forms rivers or streams.
7) the water in rivers and streams, eventually drains back into the sea.
What is precipitation ?
- precipitation, is any liquid or frozen water that forms in the atmosphere and falls back to the earth
- it includes: rain, snow, hail and sleet.
- and all forms of precipitation, contains freshwater.
How do living organisms, play a role in the water cycle ? 🍀
- living organisms, play a role in the water cycle because:
- plants take up water in their roots.
- and this water then moves up the plant in the xylem, and passes out of the leaves, through stomata as water vapour. [this process is transpiration]
How can animals, play a role in the water cycle ?
- living organisms can play a role in the water cycle because:
- animals take in water through drinking, and in their food
- and they release water: in their urine, faeces and when they exhale
Why does carbon [atoms] need to be recycled ?
- carbon need to be recycled because, it helps to sustain life on Earth
- and. Burning fossil fuels, such as oil, releases carbon into the atmosphere
- therefore this carbon must be cycled and removed from the atmosphere, back into living organisms, or it stays in the atmosphere
Why does carbon [atoms] need to be recycled ?
- carbon need to be recycled because, it helps to sustain life on Earth
- and. Burning fossil fuels, such as oil, releases carbon into the atmosphere
- therefore this carbon must be cycled and removed from the atmosphere - back into living organisms, otherwise i will stay in the atmosphere
Explain why the carbon cycle is vital to life on Earth 🧬
- the carbon cycle is vital to life on Earth because:
- carbon is an essential element for life on Earth, and parts of each of the cells in our bodies, are made from carbon- [carbohydrates, fats, proteins and DNA are all based on carbon.]
What’s the word equation for combustion?
Fossil fuel + Oxygen——> Carbon Dioxide + Water
What’s the balanced symbol equation, for combustion ?
- The [general] balanced symbol, equation for a complete combustion reaction is:
- Fuel + O2 → CO2 + H2O
Explain [in detail] why the concentration of carbon dioxide in the atmosphere is rising, and why this is an issue.
- Carbon dioxide concentrations are rising because, of the fossil fuels that people are burning for energy.
- Fossil fuels like coal and oil contain carbon that plants pulled out of the atmosphere through photosynthesis over many millions of years
- ; we’re returning that carbon to the atmosphere in just a few hundred.
