Regions with a polar climate are characterized by a lack of warm summers. what are the two sub-types of a polar climate? a) arid and semiarid b) tropic and monsoon c) tundra and ice cap d) temperate and mesothermal

How will technology impact medicine in the future?

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Explain the significance of the increased cell specialization of the volvocine line