Witch type of soil is the most porous a)sand b)loam c)slit d)clay i need asap

How does natural selection change thephenotypes within a population over time?

How does this experiment explain why it is often milder in areas such as coastal maryland while areas such as kansas or iowa have more extremes in temperature

During an experiment, readings for blood pressure in a persons body were found to be constant . however , when he measured by a different blood pressure cuff , the readings differed by 15 points for each reading. this difference indicates that the results are