The heat and the lack of water concerned him the most.

Weakened from lack of food and water, he gave up.

With a complete lack of water, humans can only live up to 3 to 5 days on average.

But the lack of water to fight the fire was an important factor.

If they don't move very soon, they'll die for lack of food and water.

However, during the dry months, lack of water can become a problem.

Then they are most likely to be forced to the surface by lack of water.

But perhaps even more critical is the lack of clean water.

The city suffered from a lack of water and food.

A major reason for this is a lack of water.