This image is from an anti-government demonstration in china that resulted in the deaths of hundreds of civilian protesters in 1989. by what name is this incident commonly known?
a) bloo. dy tuesday
b) tianamen square
c) the july massacre
d) the gwangju massacre

Which statement below accurately describes the carrying capacity of any ecosystem? a. it is not affected by any abiotic or biotic resources. b. it does not affect the species of an ecosystem. c. it is completely dependent upon the food supply. d. it is affected by both abiotic and biotic resources

The persian wars started when emperor darius i began an invasion of greece. what caused darius to decide to attack greece? a. greek pirates had raided persia's merchant ships and coastal towns. b. greek armies had attacked and taken over land that belonged to persia. c. greek city-states had supported rebellions in the persian empire. d. greek leaders had declared independence from the persian empire.

Can someone me with these 2 questions? and tell me why it is the correct answer?