hard to be together because one gose some where and the other 1 stay there wait for it example:carlos goes to the restroom and chris stay in the chair wait for his turn
Twin studies allow the effects of environment ('nurture') and heredity ('nature') to be investigated in humans.
In non-humans animals we can carry out controlled breeding experiments to investigate...
First off, twins are hard to come by. This is especially true of conditions that are already rare, since they do not often have the chance to conduct a twin study due to the low probability of...
Advantages - a pulley allows you to apply force in any direction, not just the one in which the force is to applied. Multiple pulleys yield a mechanical advantage that can allow the lifting of heavy...