In humans, straight thumbs are caused by the dominant allele t, while individuals who are tt have thumbs that curve backward ("hitchhiker's thumb"). consider a family in which the father has straight thumbs, and both the mother and their only child have curved thumbs. what is the chance that their next child will have curved thumbs

in addition to being able to metabolize, grow, digest food, and excrete wastes, what other functions must an organism perform if it is to survive? survival also depends on the ability to maintain one's boundaries, to move, to respond to stimuli, and to reproduce. oxygen is a survival need.

answer: d. load

a river's load refers to the natural phenomena in which the sediments, rocks   stones, boulders and other deposits are removed and picked from the bottom bed of the river due to the abrasion resulted by the high speed water current.