Hot air balloon bursts at higher altitude .why?

As the balloon ascends, the pressure of its environment decreases, and the balloon begins to expand

Explanation:

This expansion continues until the material of the balloon is stretched to its breaking point, causing the balloon to burst. This typically occurs at stratospheric altitudes between 30 and 35 km.

As the balloon ascends, the pressure of its environment decreases, and the balloon begins to expand. This expansion continues until the balloon's material reaches its breaking point, at which time the balloon will explode. This is most common between 30 and 35 kilometers in the stratosphere.

Explanation:

A ballon will blast when the internal expanding force is higher than the external one enough to break its material

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.