Anything with parts that interact to make a whole is/an
1. ecosystem
2. system
3. envirnment
4. population
How do births and deaths in an ecosystem affect population size?
1. more deaths than births in a population increases the size.
2. more deaths than births in a population does not affect the size.
3. more births than deaths in a population increases the population size.
more births than deaths in a population decreases the size.
A population size can stay the same over time when
1. there is more births than deaths in a population over time.
2. there is less births than deaths in a population over time.
3. the number of births and deaths are relatively the same over time.
4. there is more deaths than births in a population over time.
Over a period of time, a population can be considered as stable or changing. A population changing means that
1. the number of births is equal to the number of deaths
2. there is no change in the number of births or deaths
3. the population is stable
4. the population is increasing or decreasing
How does the number of births compare to the number of deaths in a population that was stable?
1. there is a change in the number of births compared to deaths
2. the population is increasing or decreasing
3. the number of births is equal to the number of deaths
4. there is births in the population and no deaths in the population
How would you expect the number of births to compare to the number of deaths in a population that was changing?
1. the number of births is equal to the number of deaths and there is no migration to or from the ecosystem
2. the number of birth is higher than the number of deaths or the number of births is lower than the number of deaths.
3. there is no change in the number of births or deaths and there is no migration and diseases
4. the population is stable and there is no relative decrease or increase in the number of organisms in population.
Within a population organisms are always _______________
1. being killed and dying and interacting with one another and their physical environment.
2. being born and dying and interacting with one another and their physical environment
3. surviving as a result of predation, hunting, and lack of food
4. surviving as a result of more competition for resources
If a population is stable, does that mean there are no births and deaths?
1. Yes, in a stable population there is no births and deaths
2. Yes, in a stable population the number of births and deaths are not the same
3. No, in a stable population there is more births than deaths
4. No, in a stable population the number of births and deaths are relatively the same
What does this graph show about how the jelly population change?
1. the population was stable from 1980 through 2000 and then decreased from year 2000 to year 2010
2. the population was stable from 1980 through 2000 and then increased from year 2000 to year 2010
3. the population increased from 1980 through 2000 and then decreased from year 2000 to year 2010
4. the population decreased from 1980 through 1990 and then increased from year 2000 to year2010
All the living and nonliving things interacting in a particular area is called?
1. systems
2. biotic factors
3. ecosystem
4. population
Any living thing such as plants, animals, and bacteria is called
1. an organism
2. sample
3. ecosystem
4. system
What could have caused the size of the moon jelly population to decrease?
1. Births increased while deaths decreased
2. Births decreased while deaths increased
3. Deaths increased while births increased
4. Deaths decreased while births decreased
A group of the same type of organism living in the same area is called.
1. ecosystem
2. system
3. sample
4. popultion
When something stays mostly the same over time it is called
1. stability
2. organism
3. change
4. population
When something becomes different over time is is called
1. change
2. stability
3. population
4. ecosystem
Anything with parts that interact to make a whole is a.
1. system
2. stability
3. ecosystem
4. population
If the number of births and deaths in a given time are equal, then
1. the population size will be changing.
2. the population size will be stable.
3. the population size will decrease
4. the population size will increase.
If there are more births than deaths in a given time, then the size of the population will increase. If there are fewer births than deaths, then the size of the population will ____________.
1. decrease
2. increase
3. change
4. get bigger
The structures inside the cells such as the nucleus, cell wall, cytoplasms, and chloroplast are called
1. organism
2. organelle
3. organ
4. organ system
Onio cell is a plant cell because it has
1. cell wall, chroloplast, and large central vacuole