Explain how the introduction of a new species to an ecosystem can disrupt the balance of that ecosystem

I adds another group of predators or prey thereby shortening the availability of food because if it is a predator then they will be eating the food that other animals were eating before and if it is prey there will be more food which means living longer for other species which results in more reproduction and overcrowding

it takes hundreds of years to become stable.

if you have another question lmk.

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.