Multiple things cause the migration of people.
Economic issues arise:
People run out of jobs and opportunities
(BIGGEST REASON)
Cultural reasons:
Forced intentional migration had occurred in the past on accounts of slavery and political instability
Safety:
More popular reason now is because of war or fights with other countries, the people want to keep their family safe so they move them or move with them
Hope this helped
Answer:
A. A year of drought followed by four years of average or above-average rain
Explanation:
In the first year the Finches population goes down drastically meaning that a disaster must have occurred that would negatively affect the population, a drought. The next four years the Finch population increases steadily so the average rainfall must have been average or above average according to the graph.
Answer:
Bees have 5 eyes.
Bees have been here around 30 million years.
Bees can fly at a speed of 20 miles per hour.
Bees are insects, so they have 6 legs.
An average beehive can hold around 50,000 bees.
Male bees in the hive are called drones.
Female bees in the hive (except the queen) are called worker bees.
Explanation:
For cells that are larger, nutrient intake and waste elimination takes a longer time due to the larger distance that must be covered by the same transport processes as the ones taking place in smaller cells. Shapes that maximize surface area help increase the rate of nutrient uptake and waste elimination.