Based on the students' experimental design, state an appropriate hypothesis. es ))
A)
Alkali metals act as catalysts for the decomposition hydrogen peroxide.
B)
Metallic salt solutions will catalyze the decomposition of hydrogen
peroxide.
A double replacement reaction occurs when metals are added to hydrogen
peroxide.
D)
What type of solution will act as a catalyst for the decomposition of
hydrogen peroxide?

What do scientists need to look at before developing an argument

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods. c. it shows that these organisms share the same habitat. d. it provides evidence that these organisms suffered a genetic mutation.

During crossing-over, a. genetic material is exchanged between nonsister chromatids, resulting in new combinations of alleles. b. nonsister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. c. one homologous chromosome of a tetrad is exchanged with another tetrad, resulting in new combinations of alleles. d. sister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. e. genetic material is exchanged between sister chromatids, resulting in new combinations of alleles.