1) Weather services gives up to 8 hours of watch time because its just a prediction and might not be accurate
2) Necessary precautions is when there is a dangerous weather alert coming towards you and you need to go for safety
3) When theres a warning, it means to look out for something and be safe at the same time
calcium is released into the sarcoplasm through gated channels
<h3>What is
calcium ?</h3>
The chemical element calcium has the atomic number 20 and the letter Ca as its symbol. Calcium is an alkaline earth metal that reacts with air to create a black oxide-nitride coating. Its heavier homologues barium and strontium are most similar to it in terms of physical and chemical characteristics. It is the third most plentiful metal, behind iron and aluminum, and the fifth most abundant element in the crust of the Earth.
The most prevalent calcium component on Earth is calcium carbonate, which may be found in limestone and the fossilized remains of ancient marine life. Other calcium-rich materials include gypsum, anhydrite, fluorite, and apatite. The word "lime" comes from the Latin word calx, which was made by heating limestone.
To learn more about calcium from the given link:
brainly.com/question/24631381
#SPJ4
Answer:
Vesículas e vacúolos são sacos ligados à membrana que funcionam no armazenamento e transporte. Os vacúolos são um pouco maiores do que as vesículas, e a membrana de um vacúolo não se funde com as membranas de outros componentes celulares. As vesículas podem se fundir com outras membranas dentro do sistema celular