Answer:
Relative organisms
Explanation:
Ecology is a branch of biology that deals with the relations of organisms to one another and to their physical surroundings and conditions.
hope this helps:)
Concentration is the amount of substance per defined space. Another definition is the ratio of solute in a solution to either solvent or total solution. :)
Answer:
I,Br,Cl,F
Explanation:
ionization energy decreases the farther down an element is
Hope this helps :) remember your conversions and just practice it's fairly easy:)