SOLUTION: We are studying chapter 3 in survey of math w/apps, but this question is not in the book. It is one assigned for homework. Since I have been ill I have not been able to study a l

Question 193126: We are studying chapter 3 in survey of math w/apps, but this question is not in the book. It is one assigned for homework. Since I have been ill I have not been able to study a lot. Can someone please help me by 3:00 am tonight? Here is the question:
Determine whether the argument is valid or invalid.
A tree has green leaves and the tree produces oxygen.
This tree has green leaves.
-----------------------------------------------------
∴This tree produces oxygen.
Answer by RAY100(1637) (Show Source): You can put this solution on YOUR website!
again given the statement
IF a tree has green leaves,,, THEN it produces oxygen
The tree DOES have green leaves ,,, then it does follow that it produces oxygen.
HOWEVER, the initial statement cannot be just an observation, it must define causality.
For instance, the tree has green leaves, it is in my front yard, it provides shade, the birds like it, AND it produces oxygen. No causality is stated therefore, we do not know if any of these conditions lead to it producing oxygen.
Your problem appears to be an observation rather than a conditional statement, therefore we have no proof it is true.
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