Stage 3 because the person fev1 level is go down not up
Answer:
algae. I just looked it up. algae are autotrophs meaning they make their own food. I hope this helps!
The abundance of abiotic factors, like light, water, and shelter, limit the amount of biotic factors.
Answer:
element Y and Z
Explanation:
Having on valence electron indicates that these elements are on the same column/group of the periodic table. Both these elements will bond with a -1 charge.
