Biochemical circles Activity by Cosmas Mrindi https://padlet.com/cosmasopiyo2/hhvlavvci74v2bdk en-us 2025-03-13 00:57:11 UTC 2025-03-17 06:18:06 UTC hello@padlet.com Water Cycle https://padlet.com/cosmasopiyo2/hhvlavvci74v2bdk/wish/3363824514 Three important needs for water: photosynthesis, digestion, habitat for many species.


How is water distributed through the biosphere: Water is returned back to the atmosphere by the process of transpiration by plants and evaporation. Next, precipitation occurs when water vapor cools and falls back to Earth, this happens over land and over oceans. After that, water from land enters the ocean through seepage from the ground and down to the aquifer; this is where the soil is saturated with water. Also, water can reach the ocean by running off from the surface, this includes: flow from river, snow melting and glaciers.

]]> 2025-03-13 02:26:32 UTC https://padlet.com/cosmasopiyo2/hhvlavvci74v2bdk/wish/3363824514 The nitrogen cycle https://padlet.com/cosmasopiyo2/hhvlavvci74v2bdk/wish/3364037219

  • Percentage of the air is nitrogen?

    • 78% of the Earth's atmosphere is nitrogen.

  • Why is nitrogen essential to life?

    • Used for amino acids and proteins.

  • How do plants and animals get nitrogen if not from the atmosphere?

    • Plants gets nitrogen from the soil in the form of nitrates and ammonium. Animals get nitrogen by eating plants or other animals.

  • What are nitrogen-fixing bacteria?

    • These are bacteria like Rhizobium that convert nitrogen from atmosphere into ammonia, making nitrogen available to plants.

  • What is a major reservoir for ammonia?

    • The soil serve as major reservoirs for ammonia, which is produced by nitrogen-fixing bacteria and decomposers.

  • Why do herbivores need nitrogen?

    • Herbivores need nitrogen to build proteins for growth and more.

  • What is denitrification?

    • Denitrification is the final process by which denitrifying bacteria convert nitrates back into nitrogen, releasing it into the atmosphere.



    • ]]>     2025-03-13 04:54:16 UTC https://padlet.com/cosmasopiyo2/hhvlavvci74v2bdk/wish/3364037219     Water cycle tantont1 https://padlet.com/cosmasopiyo2/hhvlavvci74v2bdk/wish/3368791100 What is an aquifer?

    • Water-saturated zone of soil and rock


    Name two ways water travels from land to the ocean?

    • Seepage from the group

    • Runoff from the surface


    What does runoff include?

    • runoff from the surface includes flow from rivers as well as melting snowfields and glaciers.


    How much water enters the hydrologic cycle?

    • Over 80%


    How much water falls back as rain?

    • 52%

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