In what regions are solar, wind , biomass , geothermal , hydro and ocean are cost effective?

the sun d the answer is sun

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.

: -)

"do a testcross with a homozygous recessive plant."

i believe it is c: genes for body color and wing size are inherited separately from each parent.