Does the honey and the sugars react with the water in the bread?

On a caravan trip recently, we had an ant invasion. To stop it, I laid down liquid ant killer around a circular vent hole in the floor of the caravan, where they seemed to be coming in.

As I laid the liquid down, the ants immediately headed for it, drank/ate it and, after about 5 minutes, the majority of them were unmoving (dead, asleep?). There were about 100 bodies there - as it was evening, I decided to leave them there and clear them away in the morning.

But when I woke in the morning, all the bodies were gone!! How did that happen? And why?

It seems to suggest that other ants arrived, saw their dead 'comrades', waded through the ant killer to get them and then dragged the bodies back through the liquid to their nest - is that possible? But why?

As an aside, the ants also seemed to learn that the liquid was poisonous as we didn't see another ant for 2 weeks.

Have primates which have been taught basic communication by humans been seen to go on and use this skill to try and communicate within their group.

I recently heard that when a Bull ant is cut in half, each half fights each other. The head bites the tail and the tail stings the head, for up to 30 minutes, until one of the halves dies. Can anyone explain this phenomenon?

The photo shows a green sweet that has been discovered by ants on a paved path in my garden. The sweet had been dropped several hours before, and had attracted the interest of an ant colony which was carrying it away. But the pattern of the surrounding plant debris is a mystery. What accounts for its arrangement around the candy?

Roy Levian, Lexington, Massachusetts, US

I noticed this regular pattern of marks on an old desk out in the garden (it was supposed to be in the bin, but I keep forgetting). The surface has a plastic "wood-effect" finish and the algae film has built up over a longish (!) period. Recently I noticed these pear-shaped marks in the algae. Each pear is 4mm at its longest point, they're very regular and they appear to follow wandering tracks. I hope the pics show you what you need.

Location: Derry Northern Ireland.

Slugs? Snails? Mouses? Not birds, I think??

I heard that there was no leader in a school and any fish could influence the rest of them. How does this work sucessfully