Explanation:
Environmental Scientists can use GPS tagging, aerial monitoring (from a plane), RFID tags (radio frequency identification device), and/or hidden cameras to track and monitor polar bears.
First I would use a magnet to get the iron filings out then I would use a sieve to separate the wood chips from the sand and salt. After this pour water into the sand and salt and put it through filter paper, the salt will go through as it is dissolved in water and the sand will be left behind. Place this salt solution into a dish and put it over a flame, the water will evaporate and leave the salt behind
Answer:
1. Electric current decreases as more
devices are added to a(n) _a_ circuit
,
I don’t know but it might be 4 or 8