HELP PLEASE GOD Which of the following is true about an estuary?

It is all fresh water.

It is all salty water.

It has very few organisms.

It is affected by tides.

How would the enlightenment movement have suffered if the scientific revolution had not occurred

The development of humans was directly dependent ondevelopment of a language. development of communication between people. e development of tools. litdevelopment of the wheel.

How does iraqs geographical location ( desert-like environment ) affect it's politcal relationships? i've been stuck on this and i'm giving a lot of points