Answer:
So you have to choose one of those topics me personally would choose photosynthesis jsut because its something I remember and have done basically this task on before. You have to create something like a diagram/ illestration on it
For example you could do a diagram of the sun in the sky and a plant and how photosynthesis happens
Or the water circle so coukd draw a puddle and the sun and the water evaporating ( I think this is right and I hope this helps sorry if it dosent :))
Usually it is fresh. There are exceptions: The Dead Sea (37% salinity) is so salty barely lives in it and the Salt lake near Salt Lake City is so salty people can easily and comfortably float in it.
If u add up and move the decimal 2 times to left on every number u should get the right answer
Often compete to get federal grants
They do not have lungs.
They can lay up to 250 eggs a day (one at a time YIKES!)
They are poisonous (to vertebrates)