In most industrial countries,

a. the amount of trees that are removed is smaller than the amount replenished.
b. harvest rates are surpassed by net annual tree growth.***
c. there is not a diminishing supply of trees.
d. trees are being cut down because of the overabundance of trees that exist.

You are correct.

b. harvest rates are surpassed by net annual tree growth.

To determine the answer to this question, we need to analyze the concept of deforestation and the balance between tree removal and replenishment in industrial countries.

Deforestation refers to the permanent conversion of forested land into non-forest areas. Industrial countries may engage in deforestation for various reasons, such as urban development, agriculture, or logging. To understand whether the amount of trees removed is smaller than the amount replenished in most industrial countries, we need to consider factors such as tree harvesting, reforestation efforts, and overall tree growth.

In option a, it suggests that the amount of trees removed is smaller than the amount replenished. While this might be true in specific regions or for certain tree species, it is not generally the case in most industrial countries. Deforestation often exceeds reforestation efforts in these areas.

Option b claims that harvest rates are surpassed by net annual tree growth. This statement aligns more closely with reality. Many industrial countries have established sustainable forest management practices, which involve carefully planned timber harvesting and reforestation efforts. These practices aim to ensure that the rate of tree growth exceeds or at least matches the rate of harvest. Sustainable forest management is important for maintaining a healthy and balanced ecosystem.

Option c states that there is not a diminishing supply of trees. This statement is incorrect because deforestation can lead to a diminishing supply of trees. If the rate at which trees are removed exceeds the rate at which they are replenished, the overall supply of trees will decrease over time.

Finally, option d suggests that trees are being cut down due to an overabundance of trees. This is unlikely the case in most industrial countries. The reasons for tree removal are usually driven by human activities, such as land-use changes or economic exploitation, rather than an excess of trees.

Considering the explanations provided, the correct answer is b. Harvest rates are surpassed by net annual tree growth. Industrial countries generally aim to balance tree removal with reforestation efforts to maintain a sustainable supply of trees.