Shared features of b and t lymphocyte function include: ?
(a) specificity of receptors
(b) diversity of receptors
(c) regulation of activation
(d) memory(e) all above

Which of these statements are true about scientific theories and hypothesis

Which is not a likely outcome after extensive irrigation of dry farmland? useless, unproductive soil salinization of the soil depletion of groundwater nutrient-rich soil

Involving transcription and translaton. explain the causes and effects of damage to the genetic code.