All of the following are considered classification groups of viruses except a. dna viruses. b. retroviruses. c. rna viruses. d. lysogenic viruses

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation

Diagram of the evolution of land plants?

_is a product of the first stage of photosynthesis. atpglucosecarbon dioxidewater