How do you beat stage 3 on questionaut

All 8 levels ask questions about school subjects. Stage 3 is biology. You have to answer questions correctly to get bubbles (fuel). Correct answers get one bubble and incorrect answers lose one. You need 5 bubbles to advance to the next level.

To start the questions, click the cat's tail, then the bird in the hole twice, then the worm, then the flower, then the owl to chase the rabbit.