Pinterest A comb remains an essential part of the arsenal in the fight against head lice. He has lived with them day and night. These findings, however, came as no surprise to Clark. In Europe, head lice treatments are categorised as class 1 medical products. No independent assessment is required. In this context, it is not surprising that so many products fail to work on so many people.
Non-pollinating parasitoid wasps Apocrypta ovipositing on Ficus sur in South Africa The life cycle of the fig wasp is closely intertwined with that of the fig tree it inhabits. The wasps that inhabit a particular tree can be divided into two groups; pollinating and nonpollinating. The pollinating wasps are part of an obligate nursery pollination mutualism with the fig tree, while the non-pollinating wasps feed off the plant without benefiting it. The life cycles of the two groups, however, are very similar.