HELP ASAP After coming back from winter break, Jimmy tells Brian that all the sparrows have left his back yard. Jimmy thinks that this is because
his dad has stopped filling the bird feeder.
Brian doesn't know for sure, but he thinks there could be a better explanation.
What might it be?
A)
That all the birds are hibernating.
B)
The sparrows have flown south for the winter
C)
That Jimmy just isn't seeing the birds that are there
D)
That sparrows are only active at night during the winter.
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f
in

Ashort, vertical, solid, or fleshy stem possessed by gladiolus and which is used in reproduction is termed a . termed a .

Competition occurs between species when

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area