Cycles Within Ecosystems
Bayani Gaba-gaba
Carbon and nitrogen are essential to every living organism, yet there is a fixed amount of each element on Earth. If these elements were not recycled, life would have run out of raw materials long ago. Instead, natural processes move carbon and nitrogen through the atmosphere, soil, water and living things in continuous loops.
In this lesson you will trace the carbon cycle from photosynthesis through respiration, decomposition and combustion, and then follow the nitrogen cycle through the specialised bacteria that convert nitrogen into forms plants can absorb. Both cycles are tested regularly on Edexcel papers, and understanding them will also help you explain human impacts on the environment.
Manufura
- Describe the stages in the carbon cycle, including respiration, photosynthesis, decomposition and combustion
- Describe the stages in the nitrogen cycle, including the roles of nitrogen fixing bacteria, decomposers, nitrifying bacteria and denitrifying bacteria
Takardar Darasi
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Nazarin Darasi
Barka da kammala darasi akan Cycles Within Ecosystems. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- Which process removes carbon dioxide from the atmosphere? A) Respiration B) Combustion C) Photosynthesis D) Decomposition Answer: C
- Which type of bacteria converts nitrates back into nitrogen gas? A) Nitrogen-fixing bacteria B) Nitrifying bacteria C) Denitrifying bacteria D) Decomposers Answer: C
- Where are nitrogen-fixing bacteria found in leguminous plants? A) In the leaves B) In the stem C) In the root nodules D) In the flowers Answer: C
- Which of the following returns carbon dioxide to the atmosphere? A) Photosynthesis B) Absorption by oceans C) Respiration D) Nitrogen fixation Answer: C
- What do nitrifying bacteria convert ammonium compounds into? A) Nitrogen gas B) Proteins C) Nitrates D) Carbon dioxide Answer: C
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
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