🌱 Population Basics
A group of the same type of organisms living in the same area.
What is a population?
If births are greater than deaths, the population grows.
What is increase?
This word means staying about the same over time.
What is stable?
A smaller part of a population studied to learn about the whole population.
What is a sample?
An individual living thing.
What is an organism?
This is the number of organisms in a population.
What is population size?
If deaths are greater than births, the population does this.
What is decrease?
True or False: If a population is stable, no organisms are being born or dying.
What is False?
Scientists use this information to support a claim or explanation.
What is evidence?
A scientist who studies organisms and their environment.
What is an ecologist?
Name three things organisms in a population can do.
What are eat, reproduce, and die?
If births equal deaths, the population does this.
What is remain stable?
A population has 20 births and 20 deaths. Is it stable, increasing, or decreasing?
What is stable?
Why might ecologists use a sample instead of counting every organism?
It may be difficult or impossible to count every organism in the population.
A representation that scientists use to explain or understand something.
What is a model?
The type of scientist who studies organisms and how they interact with their environment.
What is an ecologist?
A population has 35 births and 15 deaths. What happens to its size?
What is the population increases?
Explain how a population can remain stable even though organisms are being born and dying.
The number of births equals the number of deaths.
Sample A contains data from 1 location. Sample B contains data from 8 locations. Which provides stronger evidence?
What is Sample B?
Information scientists use to support their claims and explanations.
What is evidence?
In our unit, student ecologists are trying to explain why the population of this organism increased in the Glacier Sea.
What are moon jellies?
A population begins with 100 organisms. There are 30 births and 45 deaths. What is the new population size?
What is 85 organisms?
Yesterday, there were equal births and deaths. Today there are more births than deaths. Describe the population's change.
It changed from stable to increasing.
Why would data collected from many locations usually provide stronger evidence than data from only one location?
It gives scientists a better picture of the whole population.
Explain the difference between a population and a sample.
A population includes the whole group of the same type of organisms living in an area. A sample is a smaller part of that population studied to learn about the whole group.