In humans, straight thumbs (T) are dominant to hitchhiker's thumb (t). Complete a Punnett square to predict the outcome of a cross between a heterozygous male with a heterozygous female.
Complete the Punnett Square below
(Note: a and b should be for female and cand d should be for male. Also, if there is only one capital letter involved then it should be placed in the first space for that individual)

c. heat from the poles back down towards the equator.

maybe because its impossible for balloons to lift a whole entire house.

i think i can answer even without the example. over time with environmental changes, sometimes a group of animals will adapt to better survive. take a moth for example. if the trees the moths use to camouflage themselves from predators, started to die or change colors themselves, the moths may, overtime of course, change color too. its just adapting to its surroundings. hope i was of any : )