| I need some help with some biology questions please :-)?
I am teaching myself biology and I have two questions in my lesson that i just can not figure out.
1. Most vascular plants have difficulty living, or surviving, in salty waters or salty soils. Some salt tolerant varieties (halophytes) are able to do so mainly by actively absorbing dissolved salts and minerals into their root cells. What effect does this have on water movements AND why? (hint: consider Osmosis)
2. What two factors appear to be most reponsible for the process of natural leaf fall from the deciduous trees of Saskatchewan?
If someone could help me with these questions it would just make my day :-)
I'm not cheating on my homework... I am asking for help which I am unable to get from a teacher. I am teaching myself and I am on spring break so I can not even attempt to get help any other way. If you can not help me then please refrain from leaving useless comments. | 
03-23-2008, 09:32 PM
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