Final answer:
Balloons released during balloon releases usually do not burst or deflate, but they eventually come back down to the ground or water bodies causing environmental concerns. most balloons are made of polymers that are not readily biodegradable leading to accumulation and pollution.
Step-by-step explanation:
When balloons are released into the sky during balloon releases, they do not burst or deflate and descend gently. Instead, they typically remain intact and travel in the atmosphere. However, they eventually come back down to the ground or water bodies, causing environmental concerns.
Most commonly-used balloons are made of polymers that are not readily biodegradable. As a result, they accumulate in land or water ecosystems and can potentially cause damage. They also contribute to pollution when they decompose into small fragments that contaminate nearby streams and groundwater supplies.