Answer:
Allan Sandage
Explanation:
Allan Sandage is an american astronomer that has undertaken extensive efforts to evaluate Hubble's constant rate of universe expansion.
in the beginning of his career in 1958 , the primary focus of Allan is to evaluate the Hubble's constant rate.
He used many different techniques to determine the distance to several galaxies. From these many different calculations, average value of Hubble's constant was about 50 km/sec/megaparsec.
Ooo, history! I got this one :D
The stamp act was what required a tax to be paid if you exchanged documents. The act was made by the congress, and it allowed those who paid their tax to have a stamp on their document!
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The answer is:
C. Mass
Explanation:
The physical changes of a substance are those that change its physical properties. Physical properties include attributes such as color, gloss, malleability, shape, texture, or condition.
Conduct disorder is a repetitive and persistent pattern of antisocial behavior that results in problems at school or work or in relationships with others.
Conduct disorder comes under the category of behavior disorder .In this the child faces problem to connect with the people in his environment. Unlike the normal people it becomes tough for the people with this order to establish their connection with the masses.
He sought to have an antisocial behavior.
Children with mental health problem tends to face this disorder which prevents them to interact with people.
The disorder can be further divided into two
childhood onset and adolescent onset
To learn more about conduct disorder click here:
brainly.com/question/1298832
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