Question

Explain why self-heating cans are very expensive.

Answer 1

Explanation:

Self-heating cans have dual chambers, one surrounding the other, making a self-heating food package. ... This is because self-heating cans are considerably more expensive than the conventional type, take more space, and have problems with uneven heating of their contents.

Answer 2

this is because self-heating cans are considerably more expensive than the conventional type, take more space and have problems with uneven heating of their content