Download PDF. A directional hypothesis is a prediction made by a researcher regarding a positive or negative change, relationship, or difference between two variables of a population. This prediction is typically based on past research, accepted theory, extensive experience, or literature on the topic.
Description [edit | edit source]. A Lead Ingot Mold is a craftable item that is placed in to a Forge and used to cast Scrap Lead into Lead Ingots. Due to the fact a Lead Ingot Mold is not affected by durability it will not suffer any damage and last indefinitely. As with all Molds it will only accept scrap items with the correct type of base metal, in this case lead. For a current list of all lead based items check the page Scrap Lead.
Product description. SeaChem CupriSorb is a powerful adsorbent of copper and heavy metals. CupriSorb will remove copper more rapidly and efficiently than carbon and is thus ideal for emergency copper removal. It extracts all types of copper from water and, if in continuous use, from the gravel/substrate bed as well.