lime Normally shale does not harden, but there are also calcareous shales.If slate contains lime, then a lot, so definitely test it!You can check relatively easily whether yours is hardening – pour vinegar or citric acid on it. If it…
(Brian Waak/EyeEm/Getty Images) As the measurement system has gone through different phases, there are several champions, each with different criteria. The first survey by the Brazilian Institute of Public Opinion and Statistics (Ibope) took place in the year of TV’s…
Butterfly cichlid © Carmen Brehm Butterfly cichlids are very sensitive. They need fairly soft, acidic water. In addition, they are susceptible to stress and restlessness in the tank. Goggly eyes, loss of color and a significantly reduced lifespan are usually…
– (Museo del Prado, Madrid/Reproduction) Continues after advertising Continues after advertising Continues after advertising Continues after advertising Continues after advertising Continues after advertising Continues after advertising Continues after advertising Continues after advertising Supposedly it was a celebration performed by witches…
Data sheet African butterfly cichlids Scientific name: Anomalochromis thomasi Origin: West Africa (Liberia, Sierra Leone) Size: 6 cm (female), 8 cm (male) Aquarium Length: 100 cm Contents: 60 L (a pair), better 100 L water values Temperature: 25 – 27°C…
You could say that the nail is little more than a cemetery of cells: the tissue that composes it is formed by cells that die under the skin of the fingers and are continually pushed by new layers that do…
A solar shower is a good solution if you want to be independent of the heating network. The power of the sun heats the water in the tank and causes it to be dispensed through the shower head. A solar…
Due to a number of historical and political factors that have fostered poverty and armed conflict in the region. To give you an idea, the combined GDP of the entire continent is US$ 2.1 trillion, which is below India (US$…
Data sheet rose primrose Botanical name: Primula rosea Origin: India growth height / size 15 to 20 centimeters leaf color: Green flower color: Red, pink and violet behavior/stocking Location at the pond: pond shore heyday: March to April Light requirement:…
»> See for yourself: looking from above, normally the left is lower than the right. This occurs because of the difference between the cords that support the testicles. Both are formed by blood vessels, nerves and muscle, but the cord…