An organism that obtains energy by feeding on other organisms

Heterotrophs/ or consumers

Explanation:

Heterotrophs, or consumers, are organisms that must obtain energy by consuming other organisms (autotrophs or other heterotrophs) as food.

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?