4.010
Mutations can be caused by
a. radiation
b. chemicals
C. both a and b

After fertilization, which type of cellular division is responsible for the growth and development of a complex, multicellular organism?

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

Which of the following types of rock would most likely contain a fossil? slate granite lava rock limestone