Evidence that support chloroplast in plants and eukaryotic algae evolved from the same ancestors of cyanobacteria

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

they both go up but then go back down. they both end lower than they started. lastly, they both are competitive/the second on.

explanation:

if you look up in the top right corner you'll see your current profile picture, click than click "view profile" you'll be able to change it there.

if you know your abc's you should be able to get your answer or just use google