A2 1 Nutrient Cycling

Question 1

Carbon cycle

Answer 1

Plants absorb co2 from atmosphere.
Used co2 to synthesis carbohydrates during photosynthesis
Carbohydrates can produce proteins, lipids and Nucleic acids
Plants release co2 into atmosphere during respiration

Animals/consumers graze on plants
Consume co2 through digestion
Release back into atmosphere during respiration

Decomposers feed off decomposing organic matter for food. Release into atmosphere during respiration

Fossil fuels contain carbon such as oil, coal and peat. When burned, released into atmosphere

Question 2

Is energy recycled through ecosystems?

Answer 2

No it is transferred.

Due to all energy conversions hear energy is released and radiates into space eventually