Lighter skin color is the product of fewer *blank*
in the skins *blank*.
This allows more *blank*
to be produced when exposed to *blank*
of sunlight.

i attached a pic!

Ascientist wants to determine the effect of a new type of gasoline. he fillsone car with normal gasoline and another identical car with the new gasoline. which is the control group? a. the new type of gasolineb. the car with the normal gasolinec. the car with the new gasolinethe amount of gasoline usedd. the amount of gasoline used

Which are characteristics of flukes? check all that apply. a they are free living. b they are a type of flatworm. c they reproduce sexually. d they have eyespots. e they are segmented.

Why should organisms reproduce more offspring than will survive? select all that apply.