demo added

18_Fetch_And_Axios/18_fetch_axios.md

@@ -489,7 +489,9 @@ As you have seen, there is no much difference between fetch and axios. But I rec
 
 ## Exercises: Level 1
 
-1. Find the average metric weight and life span of cats in the following [API](https://api.thecatapi.com/v1/breeds). There are 67 breeds of cats in API.
+1. Find the average metric weight and life span of cats in the following [API](https://api.thecatapi.com/v1/breeds). There are 67 breeds of cats in the API.
+  
+  ![Average cat weight and age](../images/average_cat_weight_and_age.png)
 
 🎉 CONGRATULATIONS ! 🎉
 

19_projects/19_projects.md

@@ -30,6 +30,9 @@ Congratulations for making it to this far. Now, you have a solid understanding o
 
 ## Exercises: Level 1
 
+Use the following two APIs, [all cats](https://api.thecatapi.com/v1/breeds) and [a single cat][https://api.thecatapi.com/v1/images/search?breed_id=abys]. In the single cat API, you can get url property which is the image of the cat.
+Your result should look like this [demo](https://thirty-days-of-react-cat.herokuapp.com).
+
 🎉 CONGRATULATIONS ! 🎉
 
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