1b/c- the water and carbon cycle are systems

Question 1

distribution and size of stores in water cycle

Answer 1

Oceans are the biggest sore with 97% of the earth’s water, glaciers/polar ice store 2% and lakes are the least with 0.01% of water.

Question 2

distribution and size of stores in carbon cycle

Answer 2

the biggest store is in sedimentary rocks, up to 100 million Gt of carbon. Oceans store 38,000 billion tonnes. The smallest store is plants which store 560 billion tonnes.

Question 3

inputs and outputs of the water cycle

Answer 3

precipitation is the main flow of water and moves 497,000 km3 per year, evapotranspiration moves 71,000 km3 per year.

Question 4

inputs and outputs of the carbon cycle

Answer 4

photosynthesis, decomposition, weathering
respiration and combustion.