Answer:
A
Explanation:
only one type of atom= (PURE SUBSTANCE not mixture)
is atom chemically bonded to another atom? (NO- element, not compound)
Answer:
d
Explanation
lack of food = no energy = fatigue
Yes
C is the answer
Hopefully this helps
Answer:
decrease
Explanation:
if the producer is destroyed then all the others are dead
Answer:
I think it's A but I'm not completely sure