EQ 2 sub-aerial processes

Question 1

weathering

Answer 1

the in-situ breakdown by chem, mechanical or biological agents.

Question 2

what is biological weathering?

Answer 2

weathering that speeds up mechanical or chemical weathering through the action of plants, bacteria or animals.

Question 3

give an example of chemical weathering

Answer 3

carbonation- dissolution of limestone and otehr carbonate rocks due to rainfall

Question 4

give an example of biological weathering

Answer 4

Tree and Plant roots growing in cracks and fissures forcing rocks apart - can contribute through vegetated cliff tops contribute to rock falls