Answer:Why do classification systems change over time? When scientist find new species that may have to change classification systems in order to accommodate them. DNA sequencing has also let us find out more about evolutionary relationships. ... This means that scientists have to change the way they classify them.
Explanation:
Answer:
a settlement house is 'an institution in an inner-city area providing educational, recreational, and other social services to the community.'
The answer to this question is Voluntary.
One negative aspect about the voluntary aspects of research is that it may damage the validity of the research.
For example, if research is being done through questions about certain topics. People who know the purpose of the research could fake the data to obtain positive results.
I believe the answer is: D. Benefit
Benefit refers to the positive value that you receive after making a certain amount of sacrifice. This concept could be used when you are choosing a product. Between pencil or t-shirt, t-shirt would definitely offer more benefit in term of functionality and financial value.
To be able to do this, he would have to be in Piaget's "stage of formal operations".
The formal operational stage is the fourth and last phase of Jean Piaget's theory of cognitive development. It starts at around age 12 and keeps going into adulthood.
Now being developed, thinking turns out to be substantially more refined and progressed. Children can consider conceptual and hypothetical ideas and utilize rationale to think of innovative answers for issues. Abilities, for example, legitimate idea, deductive thinking, and precise arranging additionally develop amid this stage.