This natural landmark can vary greatly in size as a result of flooding and evaporation. what is its correct name and location?

- world peace, cause that's important

- iron man to still be alive, cause i cried my eyes out

- for those in starving places like africa to get the support that they need for food and water, cause they r humans and need those basic things go be alive.

c- companies fail to take environmental protection into account. i think

can you explain it better