Hi I'm writing an essay for geography and I have to talk about migration and how it impacts on donor and host regions
I'm asked to explain about donor and host
But not quite sure what to write I know what they mean I just can't seem to start it off any help would be great thanks x

I am not quite certain what you are wanting in the way of advice.

What do you have so far? What do you think they mean? Have you tried starting with the definitions and expanding from there?

I Googled "migration donor and host" (without quote marks) and found a cool PDF explanation of the advantages and disadvantages for both host countries (receiving countries) and donor countries (source countries) for people who migrate from one country to another.

If you are talking about animals, you can extrapolate from that information or do a more specific search.