Answer:
There were two technological innovations that profoundly changed daily life in the 19th century: steam power and electricity. The railroad helped expand the U.S. The telegraph, the telephone, and the typewriter brought people together that were far away. America began producing more steel than England.
Explanation:
Plant cells have cell walls and cell membranes while animals cells only have their flexible cell membranes.
<span>Plant cells have chloroplasts, where photosynthesis takes place.</span>
Ethics is an essential tool to bear in mind when trying to obtain verbal exchange competence.
Ethics examines the rational justification for our ethical judgments; it research what is morally right or wrong, just or unjust. In a broader sense, ethics reflects on human beings and their interplay with nature and with different humans, on freedom, on accountability and on justice
<h3>Why is ethics so important?</h3>
Ethics is what guides us to tell the truth, keep our promises, or assist any person in need.
There is a framework of ethics underlying our lives on a every day basis, supporting us make choices that create superb affects and steerage us away from unjust outcomes.
Learn more about ethics here:
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Answer:
stimulus control.
Explanation:
Stimulus in biology can be defined as an obvious change in either the chemical or physical structure of an organism' environment (either external or internal). All living organisms (both plants and animals) respond to changes in their environment and as such an appropriate reaction or response is made. Also, stimulus arising from within the organism is known as internal stimulus while those from its environment are known as the external stimulus.
In organisms, the specialized cells that detect stimulus are generally known as sensory receptors while a group of these receptors is referred to as sense organ.
Stimulus control can be defined as a phenomenon that arises when a living organism responds or behaves in the presence of a stimulus and in another way in the absence of a stimulus.
Hence, when a behavior is elicited by a stimulus without additional prompts and reinforcers, stimulus control has been attained.
For example, opening the door of a microwave oven as soon as its timer beeps.
