Vocabulary/Vocabulario
A group of the same species living in the same area is a ______.
What is a population?
Within a population, organisms are always being ______ and ______.
What is born and dying?
What does a birth add to in a population?
The population size.
Why can’t scientists count all the jellies in Glacier Sea?
Because the population is too large.
Populations exist within larger ______.
Ecosystems.
A small part of a population studied to understand the whole is a ______.
What is a sample?
If the number of births and deaths are equal, the population size will be ______.
What is stable?
What does a death remove from in a population?
The population size.
What do ecologists study instead of the whole population?
A sample.
The moon jelly population is part of which ecosystem?
Glacier Sea.
A community of living and nonliving things that interact in an area is called an ______.
What is an ecosystem?
If more organisms are born than die, the population will ______.
What is increase?
When births > deaths, does the population increase or decrease?
Increase.
The stronger the sample represents the whole population, the stronger the ______.
The evidence.
True or False: An ecosystem can only contain one population.
False
When a system remains balanced even as things are added or removed, it has ______.
What is stability?
If fewer organisms are born than die, the population will ______.
What is decrease?
When births < deaths, does the population increase or decrease?
Decrease.
What kind of data do scientists collect about births and deaths?
Population data (counts, trends, models).
What interacts in an ecosystem?
Living and nonliving things.
Give one example of a population in Glacier Sea.
Moon jellies, fish, plankton, etc.
A system can be stable even if things are added and removed as long as these amounts are ______.
What is equal?
What would happen if no new births occurred in a population for a long time?
The population would eventually disappear.
Why do ecologists evaluate multiple pieces of evidence?
To find the strongest explanation.
Why is stability important in an ecosystem?
It helps the system stay balanced even when changes occur.