Which of the following structural adaptations the organism obtain food?

a.
dandelion seeds that can float in the wind

b.
the bright-colored skin of a poison dart frog

c.
the long neck of a giraffe

d.
the spines on a cactus

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere