Here is a link to lesson 1 with the reading and writing components. For your reference, here is a link to the integrative writing task materials (try to compose the essay without looking at these).
Here is a link to lesson 2. Here is a link to the independent listening on predicting earthquakes. Feel free to stop and start the recording as needed to answer questions.
Here is a link to class listening 1 on snakes.
Here is a link to class listening 2 on animal sense.