Cockroaches can spread pollen for plants, and 80% cockroaches have this ability. A king's flower, Levoceania flower and giant konjac, grows in tropical forests in Java and Sumatra, Indonesia, and attracts small insects to climb up and down the flowers by smell to spread pollen for themselves. Obviously, Wang Hua has a more unique vision than human beings in understanding the value of small insects such as flies and cockroaches. In fact, the interdependence between biological species is closer than we thought.
1. What are the hazards of cockroaches?
Cockroaches often hide in crevices and dark corners in kitchens, food cabinets, feed depots, bathrooms and other places. It can not only change the quality of grain, oil and food, but also damage storage items such as clothes and books. It can also easily drill into large electrical appliances, electronic computers, precision instruments and household appliances to bite off lines, causing unexpected failures. Cockroaches also directly endanger human health.
2. Cockroaches carry the most germs and are the most harmful to human health.
It carries more than 4 0 kinds of pathogens such as Yersinia pestis, Shigella dysenteriae, Escherichia coli, poliovirus and aflatoxin, and its secretions and feces also contain many carcinogens. Cockroaches also have bad habits of eating, spitting and excreting. It can secrete smelly liquid, leaving peculiar smell and various pathogens on food by crawling. The contact of cockroaches with children's bodies can cause more than a dozen common and frequently-occurring diseases such as dermatitis, asthma, tuberculosis and hepatitis.
3. Cockroaches have unique habits.
Reproduction is rapid (a fertilized female cockroach can evolve into hundreds of thousands a year with sufficient food). And can reproduce asexually for more than three generations; Strong viability (can freely shuttle in the gap of 1.6 mm, and can survive for 40 days without eating any food in the presence of water); Cockroaches have now become the most indoor invasion, the most harmful to human beings and the most harmful urban health pests.