The demand for environmental scientists and hydrologists is expected to increase because of a(n) a. increased demand for natural resources; need to create environmental laws to protect natural resources for human consumption; need to develop air quality control systems for big business; need to ensure proper disposal of human waste b. increased demand for natural resources; need to enforce environmental laws and regulations; need to analyze human impact on the environment and to invent ways to restore it; need to ensure proper disposal of human waste c. decreased demand for natural resources; need to analyze impact of invasive species on the environment and to invent ways to preserve it,decrease of man-made reefs and their impact on oceans; need to develop sanitation systems d. decreased demand for natural resources; need to enforce environmental laws and regulations; need to develop sanitation systems; need to create environmental laws to protect natural resources for human consumption __ ? ?

## Step 1<br />The problem is asking us to identify the reasons why the demand for environmental scientists and hydrologists is expected to increase. The options provided are all related to the increased demand for natural resources and the need to enforce environmental laws and regulations. However, the options differ in the specific tasks that these professionals are expected to perform.<br /><br />## Step 2<br />Option A suggests that these professionals are needed to create environmental laws to protect natural resources for human consumption, develop air quality control systems for big business, and ensure proper disposal of human waste. While these tasks are important, they are not the primary responsibilities of environmental scientists and hydrologists.<br /><br />## Step 3<br />Option B suggests that these professionals are needed to enforce environmental laws and regulations, analyze human impact on the environment and invent ways to restore it, and ensure proper disposal of human waste. These tasks align closely with the responsibilities of environmental scientists and hydrologists.<br /><br />## Step 4<br />Option C suggests that these professionals are needed to analyze the impact of invasive species on the environment and invent ways to preserve it, decrease of man-made reefs and their impact on oceans, and develop sanitation systems. While these tasks are important, they are not the primary responsibilities of environmental scientists and hydrologists.<br /><br />## Step 5<br />Option D suggests that these professionals are needed to enforce environmental laws and regulations, develop sanitation systems, and create environmental laws to protect natural resources for human consumption. While these tasks are important, they are not the primary responsibilities of environmental scientists and hydrologists.