Science Double Award - 4SD0 PearsonEdexcel

Cycles Within Ecosystems

Gbogbo ọrọ náà

Carbon is the backbone of every organic molecule, yet there is only a fixed amount of it on Earth. The same carbon atoms that once formed the body of a dinosaur may now be part of a leaf, a lump of coal, or the air you are breathing out right now.

In this lesson you will trace the carbon cycle through its four main stages: photosynthesis, respiration, decomposition and combustion. You will see how carbon moves between the atmosphere, living organisms and fossil fuels, and why human activity is disrupting the balance.

Ebumnobi

  1. Describe the stages in the carbon cycle, including respiration, photosynthesis, decomposition and combustion

Akọmọ Ojú-ẹkọ

Unlike energy, which flows through an ecosystem and is eventually lost as heat, chemical elements are recycled again and again. Carbon is the most important of these because it forms the backbone of carbohydrates, proteins, fats and DNA. The carbon cycle describes how carbon atoms move between the atmosphere, living organisms, the soil and fossil fuels over time.

Ọ dị na ngwa Green Bridge

Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.

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Ayẹwo Ẹkọ

Ekele diri gi maka imecha ihe karịrị na Cycles Within Ecosystems. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.

Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.

Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.

  1. Which process removes carbon dioxide from the atmosphere? A) Respiration B) Combustion C) Photosynthesis D) Decomposition Answer: C
  2. Fossil fuels are formed from: A) Volcanic rock compressed over time B) The remains of ancient organisms buried under heat and pressure C) Carbon dioxide dissolved in rainwater D) Sand and clay minerals compressed together Answer: B
  3. Decomposers return carbon to the atmosphere by: A) Photosynthesis B) Combustion C) Respiration D) Evaporation Answer: C
  4. Which of the following is NOT a stage in the carbon cycle? A) Photosynthesis B) Transpiration C) Respiration D) Combustion Answer: B
  5. Deforestation increases atmospheric CO2 because: A) Trees release CO2 when alive B) Fewer trees means less photosynthesis to absorb CO2 C) Decomposers stop working without trees D) Soil absorbs more CO2 without tree roots Answer: B

Ọ dị na ngwa Green Bridge

Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.

Akwụkwọ ndụmọdụ zuru oke nwere eserese
Onye inyeaka mmụta AI
Mụọ n'ụzọ na-enweghị ịntaneti, oge ọbụla, ebe ọbụla
Ọ dị na Android, Windows, macOS, na Linux

Ọ dị na ngwa Green Bridge

Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.

Akwụkwọ ndụmọdụ zuru oke nwere eserese
Onye inyeaka mmụta AI
Mụọ n'ụzọ na-enweghị ịntaneti, oge ọbụla, ebe ọbụla
Ọ dị na Android, Windows, macOS, na Linux

Meecha Ajụjụ Ule Ọmarịcha

Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Cycles Within Ecosystems? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.

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