The dodo, a bird that lived on islands, became extinct in the 17th century. dodo birds could not run fast or fly. sailors hunted them for food. settlers brought predators like pigs and monkeys, which ate the dodo birds. the dodo bird became extinct because of

a) human activities.
b) scarcity of food.
c) changes in climate.
d) inability to lay enough eggs.

it is a

explanation:

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.