Answer: (1) We pay taxes for federeal reasons and local srevices. (2)The parties involved in the tripartie struggle were Pratihara Empire, the Pala Empire, and the Rashtrakuta Empire. (3) An ecosystem is a community of living and nonliving organisms interacting.
Step-by-step explanation:
(1) Taxes pay for social security, medicare, defense, and education. (mostly defense though if you're American)
(2) The empires were fighting over control of northern India and took place in the ninth century.
(3) An ecosystem is a combination of abiotic and biotic (nonliving and living) organisms interacting with eachother and depend on each other for food and habitats.