1.a Water and Carbon

Question 1

Water

Answer 1

Medium that allows organic molecules to mix and form complex structures

Question 2

Goldilock Zone

Answer 2

Water is mainly liquid (Earth)

Question 3

Water vapour

Answer 3

• is a greenhouse gas
• absorbs long wave radiation
• maintains the global temps around 15 degrees

Question 4

Importance on flora (plants)

Answer 4

• needed for photosynthesis and respiration
• maintain rigidity
• transport minerals form the soil (xylem)

Question 5

Importance on fauna and humans

Answer 5

• medium for chemical reactions
• evapouration via sweating
• economic activity (generate electricity and satisfy public demand)

Question 6

Carbon

Answer 6

used to build larger molecules e.g carbs and proteins

Question 7

Role of carbon in environment

Answer 7

• economic resource (fossil fuels )
• source of timber, food

Question 8

Stores of carbon

Answer 8

• carbonated rocks e.g limestones and sea floor
• atmosphere
• agriculture and forests

Question 9

Stores of water by size

Answer 9

1. oceans (97%)
2. ice +glaciers (2%)
3. ground water (0.7%)
4. atmosphere (0.001%)
5. biosphere (0.00004%)

Question 10

Stores of carbon by size

Answer 10

1. Rocks (60,000 bil/tons)
2. Oceans (38,700)
3. Fossils (4130)
4. Soils (2300)
5. Atmosphere (600)