URGENT!!

Which method do scientists use to confirm that crossing over occurs? (1 point)

(A): cloning

(B): dihybrid crosses

(C): gel electrophoresis

(D): genetic engineering

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.

According to this food web which of the following would be considered primary consumers

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit