Magma forms when rocks in the mantle melt due to changes in pressure or the addition of water. Although temperatures in the earth's mantle are much hotter than melting temperature, there is not a... Magma forms when rocks in the mantle melt due to changes in pressure or the addition of water.
Normaxin is a medicine used in the treatment of IBS (irritable bowel syndrome).
Saxitoxin is one of only two naturally occurring Schedule 1 chemical warfare agents, and is a toxic compound found naturally in dinoflagellates. Its toxicity stems from its ability to bind to voltage-gated sodium channels found in the membranes of excitable cells such as neurons and muscle cells, blocking synaptic transmission.