Update 2 files

- /docs/images/week04/420.jpg
- /docs/assignments/week04.md

docs/assignments/week04.md

@@ -23,6 +23,8 @@ _You can read more about it [here](https://gobserver.net/5103/culture/the-story-
 
 ## **Natural Dyes**
 
+![dye](../images/week04/420.jpg){ width=100,align left}
+
 Natural Dyes are **biodegradable**, **non-toxic** and **non-allergic**. They are extracted from natural resources and hence are **eco-friendly**. Synthetic dyes are not only harmful to the environment, some of them contain carcinogenic components which are bad for our health.