a)¿Qué utensilios de uso común y pensando en la contingencia sanitaria, podrían ser elaborados del cobre?

Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials

Which of the following forest management practices is best for reestablishing areas of forest?

What are the pros and cons of quadrat sampling?