Pear and Apple Problems

I have recently noticed that my Pear Tree has some spots on some of the leaves and that the new fruit is coming off the tree quite easily. I am a beginner gardener and I am hoping that someone will be able to assist me on the identification of the problem and a non-toxic (preferrably) way to remedy the problem. I decided to add my Apple Tree into this thread because the two trees are adjacent to one another and I am naturally concerned that whatever is infesting the Pear may go the Apple as well.

Here are the Photo's I have:

1.Pear Tree....







2. Apple Tree...







Sorry for some of the blurry pictures, was trying to get close to the leaf to get photo of the insects on it, apparently I was too close =P

If anyone can help me on what sort of problem I have with these I would love to hear from you! I have some other plant problems too which I will make separate threads for so please help those ones too :wink: