Experience and features
Yes, it is possible to identify a bush by looking at a photo of it, especially if the photo shows distinctive features such as the shape of the leaves, flowers, or berries.
The first step is to identify what the firearm is, as in who made it and what the model is. Many books have been written on the subject.
Experience, books, features.
Yes, I recommend using the app called PlantSnap. It allows you to identify plants by taking a photo of them.
Impossible to answer since you did not identify or describe the firearm.
a tag.
Can use a tag.
You have a photo on facebook in order to identify the person you are claiming to be. If for some reason their photo is not of themselves, then they are being an inconvenience to the rest of the facebook world.
You can identify plants by photo for free using plant identification apps like PlantSnap or iNaturalist. Simply take a clear photo of the plant and upload it to the app, which will analyze the image and provide you with information about the plant species.
You can't identify a firearm with only the serial number.
Books, experience, physical features and technical specifications.
To identify tall weeds by photo, look for characteristics such as the height of the plant, the shape and color of the leaves, the presence of flowers or seeds, and any unique features like thorns or prickles. Compare the photo to images of known weed species to help with identification.