Answer: no friction, metal
Explanation: yes
Renewable Resources:
Nonrenewable Resources:
hydroelectric power coil and oil
apple trees gemstones
wind power steel
It is tested with the blood gas test
Food webs normally start at the bottom and work their way up. Like the plants will be at the bottom, and then each level shows the animals getting bigger while losing energy. You continually lose energy as you work your way up an ecosystem, so normally there are only three or four levels. I hope this helps!
8 electrons if it is a neutral atom.
