Rejected pictures

Even without magnification to 100 percent, at first glance, I can tell the images are out of focus. Also, there isn’t any variety of color, light, or scale in the scenery to make the photos interesting. There are too many distracting elements in the foreground of the bridge photo. In the duck photo, there is too much empty water in the background. Start by studying the rule of thirds in photography as a guideline to help you understand composition. Try moving to a different advantage spot or changing lenses, too. Keep shooting!

I'm afraid as far as composition goes, nothing special! ☹

Your pictures are out of focus, full of artefact and luminary and colour noise, bad exposure and may be several other problems:

If you want to participate as a contributor, your pictures need to be the best quality. Look at the pictures at 100% and 200% and correct the flaws you see. If you can't correct, don't submit.

If you are new to stock, you should consider these resources: https://helpx.adobe.com/stock/contributor/tutorials.html
Please read the contributor user manual for more information on Adobe stock contributions: https://helpx.adobe.com/stock/contributor/user-guide.html
See here for rejection reasons: https://helpx.adobe.com/stock/contributor/help/reasons-for-content-rejection.html
and especially quality and technical issues: https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html

Poor lighting. The bridge is washed out.

Poor lighting & poor composition. Drab.  Perhaps if the light had shone on the ducks instead of the pond scum, you might have had something. 

As stock images, these lack any aesthetic appeal.  Sorry.

See links below.

• https://helpx.adobe.com/stock/contributor/help/reasons-for-content-rejection.html
• https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html
• https://helpx.adobe.com/stock/contributor/user-guide.html/stock/contributor/help/photography-illustrations.ug.html
• https://helpx.adobe.com/stock/how-to/tips-stock-image-acceptance.html