Vegetation - In this case the plants growing in the immediate area and, therefore, available to the herbivores as food.

Qualities - The characteristics of the food. H!ow much fibre it has in it, how hard (or soft) it is, how juicy it is, what nutrients it contains and so on.

Lower down & higher up - Lower down means closer to the ground, higher up means further from the ground. The same would apply to mountains (lower down the slopes are covered in thick forest, higher up there are open slopes and glaciers).

Really you should have tried to find definitions of these terms. It took me about 10 seconds to find this definition of vegetation and this description of qualities.

I've answered your question only because I believe that it might be more difficult to find definitions for 'lower down' and 'higher up'. If you want us to help you again, please do a bit more research first, show us what you've found, and tell us what you are finding difficult to understand.

Vegetation - In this case the plants growing in the immediate area and, therefore, available to the herbivores as food.

Qualities - The characteristics of the food. H!ow much fibre it has in it, how hard (or soft) it is, how juicy it is, what nutrients it contains and so on.

Lower down & higher up - Lower down means closer to the ground, higher up means further from the ground. The same would apply to mountains (lower down the slopes are covered in thick forest, higher up there are open slopes and glaciers).