The answer is "variable-ratio schedule".
In operant conditioning, a variable-ratio plan refers to a calendar of fortification where a reaction is strengthened after an eccentric number of reactions. This timetable makes an enduring, high rate of reacting. Betting and lottery diversions are great cases of a reward in view of a variable ratio schedule.
Answer:
More accidents occur at intersections than anywhere else. One of the reasons for this is because most of the intersections have stop signs. Because there are more accidents at intersections with stop signs than those with signals or roundabouts, stop signs are not as effective in preventing accidents. This is probably why the number of accidents at Walnut and Birch Streets is so high.
Explanation:
Answer:
The President of the U.S is at the head of the Executive Branch of Government. Hope this helps =D
Explanation:
Plants that get nutrients from rocks will can cause chemical weathering. Generally there are two types of weathering processes: physical and chemical weathering and they result in the breakdown of rocks, minerals, etc. Plants contribute to both physical and chemical weathering. Plants that grow in fissures and cracks in the rocks, as they grow their roots extend. Over time, the rocks will be broken into smaller fragments. Many such plants also give off chemicals, most commonly humic acid. These acids help in the breakdown of iron and aluminum compounds in the subsurface. Plants also support microbial life forms that help in weathering of soil and minerals. All these process contribute to the weathering of rocks and minerals.
I hope i helped. Also sorry if there were any typos.
