How is a closed system investigation set up to find out what is happening with photosynthesis at night ? Eliminate all the light coming into the system

All matter moves in the system

All mater moves out of the system

If someone could do the first couple, just so i can see how it's done that would be great! 20 points. complete a dichotomous key for the 10 leaves on the common leaves sheet. the chart provided here allows for 11 pairs of statements. depending on how you build your dichotomous key, you may or may not need all of them, or you may need to add some.

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

The picture showed normal blood cells which are around and sickle cells which appear much longer people with sickle-cell suffer from the sickle cell anemia which is inherited diseaseit is caused by a change in gene responsible for production of hemo goblin this type of change is known as an