Answer:
aluminum: bauxite and corundum
Copper: chalcopyrite
Tin: Cassiterite
Explanation:
Ask him his current state in his opinion and call the ambulance.
I hope this helps!
Nerve cells communicate by sending an electrical signal through an axon, from this molecules get released into the synapse this then binds itself onto receptor sites. With ion-linked channel receptors, the ligands get binded to a protein. The ion channels are then opened and the proccess gets repeated. Does that help?
I’m pretty sure it’s water, oxygen, and food. beacuse food provided both nutrients and an energy source.
