A minimum stream velocity <span>needed to keep a 6.4 cm diameter particle in motion must be 100 cm/s.
It can be concluded from Hjulstrome curve, a graph used to determine whether stream will transport, erode or deposit particles. The faster is the current, the heavier particles it could transport.</span>
Answer:
B Physical separation of populations prevents interbreeding and mixing of gene pools.
Explanation:
Geographic isolation means two populations are unable to reproduce with one another. This means that over time, the variation in the gene pool will be different for one group compared to the other, and the species will genetically diverge from one another. resulting in speciation.
The answer is C. The phenomena occur in plant leaves and help water transportation in xylem tissues is photosynthesis and transpiration. A balance between these two phenomena is important to maintain balance in the plant's life.
C upcoming would be the closest to future
This is the chronicle of evolution over millions of years of geologic time engraved in the order which fossils appear in rock strata.
