As their name suggest, the light dependent reaction requires light to occur while the light independent reaction can take place with or without light. But the light independent reaction requires the products of light-dependent reaction to start.
Estuary ecosystems would be most affected because it is a mixture of salt and fresh water.
Get twenty people, from various genders and ages, to be your testees. Create a random test that has both analytical and logical problems, and get the 'testees' (I have no idea if this is a word or not) to do the test before and after spending time outdoors.
An independent variable is how much time they spend outside, and the dependent is how well they function afterwards. (I think).
The constant is what stays the same, so most likely the tests in this case (if taking my example)
I don't really know what you mean by control, though...
This is what I would've done if it was my homework assignment, I'd suggest looking over my answers to see if they're accurate or not. Hope I helped, and good luck.
12is the speed of 6 seconds cause the bigger the secs the slower
