Question

what do you mean by biological weathering give two examples​

Answer 1

Biological weathering isthe process in which plants, animals, and bacteria break down rocks into smaller pieces. This weathering can be done, for example, through tree roots growing in cracks in rocks and eventually breakingthe rock apart.

Answer 2

The process of weathering can result in the formation of soil by supplying particles like clay, silt, and sand. Also, the elements from the weathered rocks provide nutrients for plant and animal consumption.

Microbial activity breaks down rock minerals by altering the rock’s chemical composition, thus making it more susceptible to weathering. One example of microbial activity is lichen; lichen is fungi and algae, living together in a symbiotic relationship. Fungi release chemicals that break down rock minerals; the minerals thus released from rock are consumed by the algae. As this process continues, holes and gaps continue to develop on the rock, exposing the rock further to physical and chemical weathering.