2. A cow is ...
o A. a primary consumer
o B. a heterotroph
o C. an herbivore
o D. all of the above

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.

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

Which of the following is a way that minerals are used? a. industry construction technology d. all of the above