Statistics hypotheses

I'm starting my GCSE stats coursework tomorrow and am super super scared!!!!

My first section I will be completing tomorrow is the Planning stage. I need to state my hypotheses and all my other plans for my investigation.

My teacher has advised that I use at least two interrelated hypotheses but I can only come up with one. I don't get how they are supposed to interlink!!

My current hypo is:

As key aspects of the UK climate change (mean annual temperature, mean annual rainfall, mean annual sunshine), the population of specialist woodland birds will decrease. I think that this decrease in population will be more apparent when compared to the mean annual temperature as ambient temperatures seem to have the greatest effect on the development and general wellbeing of developing chicks.

That is the only good hypo I can think of. I was thinking of comparing the effects of rainfall, sunshine and mean temperature to the population and writing separate hypotheses for these giving me a total of 3 hypotheses but they are supposed to flow and all be interrelated. This seems to me like I have three separate investigations going on and that they do not really flow at all

Thanks in advance

Bear in mind that you will need data for the woodland birds.

I already have all the necessary data. It is secondary data from the internet

Wow.. How many pieces? And a hypothesis is meant to state something.

Wow.. How many pieces? And a hypothesis is meant to state something.

Every year from 1970 to 2013. Its not much but it is adequate. The data for the other variables stated goes back to 1910 and is recorded monthly.

My hypothesis does state something does it not??