Question: how many exprimenrts have you done during your time

Camilla Cassidy answered on 24 Apr 2023:

During my PhD – the period of study at university where you do experiments to find out how the world works, and prove your theories – I did 3 big experiments.

I was a marine biologist and I was interested in how animals in the seabed (starfish, worms and snails) act differently when their environment changes. For my experiments, I went up to Oban in Scotland and collected mud and animals from two different lochs (lakes). For one experiment, I wanted to see whether the animals for each loch acted differently in the mud from the other loch. For the next, I looked to see if they acted different under different temperatures. For the third experiment, I looked to see if different combinations of the animals made the other ones in the tank act differently, for example did snails act differently when they were in a tan with starfish than when they were in a tank with worms. All of these helped me piece together different bits of evidence about how the ways that we are changing the natural environment could be making animals act differently.