Which order of events is correct. a. zygote -> stem cells -> cell differentiation b. mitosis -> cell differentiation -> stem cells c. stem cells -> zygote -> cell differentiation d. zygote -> cell differentiation -> mitosis

Which best explains why viruses do not have special structures or enzymes that allow them to make their own food? viruses can use energy in living cells that they infect. viruses can replicate inside a host that they infect. viruses can cause contagious illnesses in host cells. viruses integrate their rna or dna into infected cells.

2points what is the term for a female reproductive cell? a. egg b. chromatid c. allele d. fertilization

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming