a handicapped man or woman is someone with disabilities and the US housing and urban law forbids any discrimination to handicap people who want to rent an apartment. they are entitled to rent an apartment even if it is handicapped accessible or not as long as they can pay for it, they should be allowed to get it and they can modify it so as it can be handicapped accessible to them as they deem fit.
Darwin's greatest contribution to science is that he completed the Copernican Revolution by drawing out for biology the notion of nature as a system of matter in motion governed by natural laws. With Darwin's discovery of natural selection, the origin and adaptations of organisms were brought into the realm of science.
Herbert Spencer is famous for his doctrine of social Darwinism, which asserted that the principles of evolution, including natural selection, apply to human societies, social classes, and individuals as well as to biological species developing over geologic time
An unbalanced force can change an object's motion. An unbalanced force acting on a still object could make the object start moving. An unbalanced force acting on a moving object could make the object change direction, change speed, or stop moving.