Soil erosion:Question 10Select one:a.is a natural process not caused by humans.b.has been accelerated by human activities.c.is a visual problem only.d.none of these

Sure, let's analyze each option step by step to determine the correct answer to the question about soil erosion.

a. is a natural process not caused by humans.

• Soil erosion is indeed a natural process that occurs due to factors like wind, water, and ice. However, this option suggests that it is not caused by humans at all, which is not entirely accurate. Human activities can significantly accelerate soil erosion.

b. has been accelerated by human activities.

• This option is correct. Human activities such as deforestation, overgrazing, construction, and improper agricultural practices can greatly increase the rate of soil erosion. These activities disturb the soil and remove vegetation that protects the soil from erosion.

c. is a visual problem only.

• This option is incorrect. While soil erosion can have visible effects, such as gullies and loss of topsoil, it is not just a visual problem. It has serious environmental and economic impacts, including loss of fertile land, reduced agricultural productivity, and sedimentation in waterways.

d. none of these

• This option is incorrect because option b is a valid statement about soil erosion.

Therefore, the correct answer is:

b. has been accelerated by human activities.