added faq page

source/content/faq/environment_management.md

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+# Environment Management
+
+## How do I save my conda environment for later use?
+
+```{admonition} Prerequisites
+:class: important
+1. A working installation of [Conda](https://docs.conda.io/en/latest/)
+2. Basic knowledge of [Conda environments](https://docs.conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html)
+```
+
+Perhaps you have already created a Conda environment that you would like to use at a later point (a year after your current LCA project is finished, for example). You can save your environment to a file using the following command:
+
+```{note}
+Replace `<ENVIRONMENT_NAME>` with the name of the environment you want to save.
+```
+
+```bash
+conda list -n <ENVIRONMENT_NAME> --export > ./environment.yml
+```
+
+This will create a file called `environment.yml` in your current working directory. You can then use this file to recreate the environment at a later point using the following command:
+
+```bash
+conda env create -f environment.yml
+```

source/content/faq/faq.md

@@ -14,6 +14,7 @@ maxdepth: 3
 error_messages
 brightway
 data_management
+environment_management
 confusing_results
 ecoinvent
 simapro