Answer:
Most analysts distinguish three groups of developing countries: low-income, lower-middle income, and upper-middle income countries.
Bedrock structure is primarily responsible for landscape differences.
Bedrock lies beneath the surface materials such as soil,
gravel, sand and other sediments. It is a deposit of hard, consolidated,
tightly-bound solid rock. It is the parent material for unconsolidated material
and soil above thus influencing landscapes.
Between 50-80 years or even more than 80 sometimes
Hmmm i don’t really know sorry bout that
Chemical weathering and mechanical weathering can be influenced by plants. Plants contribute to mechanical weathering when their roots growth through cracks and crevasses in soil or rock. Overtime the roots will break rocks apart. Some plants produce and secrete organic acids that can change the chemical composition of rocks causing them to weather. Mechanical weathering breaks rocks into smaller pieces while chemical weathering changes the composition of the rocks.
