Which of the following statements about a compound is true?
a. the physical and chemical properties of a compound are usually very different from those of the elements from which it is formed.
b. only the physical properties of a compound are usually the same as those of the elements from which it is formed.
c. only the chemical properties of a compound are usually the same as those of the elements from which it is formed.
d. the physical and chemical properties of a compound are usually the same as those of the elements from which it is formed.

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural. question 2 reflects a moral or social value. question 3 refers to something that can be measured. question 4 reflects a question that can’t be observed.

Adoença vitiligo afeta qual doença do corpo?