Organization
all the living and nonliving things in a particular area that interact with one another.
Ecosystem
What is the symbiotic relationship where both organisms are benefited?
Mutualism
Which of the following events would lead to a decrease in rabbit population size?
a. more rabbits are killed than are born
b. predators are removed from the ecosystem
c. some rabbits immigrate in search for food
d. more rabbits are born because of the rainy winter
a. more rabbits are killed than are born
Something in the environment that keeps a population from steadily increasing is known as...
A limiting factor
A series of predictable changes that occur in a community over time
ecological succession
The global sum of all life on EARTH
biosphere
A sixth grader and their pet
What is the symbiotic relationship in this scenario?
Mutualism
what is the difference between predators and prey?
prey are hunted for food, and predators capture and eat other animals to get energy
Name ONE abiotic limiting factor
Shelter, space, water availability, temperature, amount of sunlight
What is typically already present in secondary succession?
Soil
True or False: A community is part of a population.
False
Small mites live on your skin, eating dead skin cells. You don't even notice!
What is the symbiotic relationship in this scenario?
Commensalism
Emma is studying interactions between organisms in a food web. What could happen to the population of other organisms if the foxes suddenly disappear?
The population of organisms that are prey to the foxes would likely increase
Name ONE biotic limiting factor
food, competition with other organisms for resources, predation, and diseases
What is a pioneer species AND provide an example
a species that is first to establish itself in an area
example - lichen, moss
All of the populations of organisms that live together in the same area, and ____________________ with each other, make up a _______________.
interact, community
Marine fish eat leftover food from a predatory shark, and the shark is not affected by the presence of the fish.
What symbiotic relationship does this scenario show?
Commensalism
what is it called when two or more individuals or populations try to use the same limited resources?
competition
HOW is disease a limiting factor in a small ecosystem?
disease spreads faster in a small area
Explain the role of mosses and lichens in primary succession
they break down rocks over time and help to form soil
List the levels of organization from smallest to largest?
organism, population, community, ecosystem, biome, biosphere
When two organisms enter a relationship where they are in close contact for at least part of their life cycles, and at least benefits from the relationship.
Symbiosis
What is one of the most common reasons for any population size to increase?
more birth rates than death rates
What is the definition of carrying capacity?
the largest population an area can support sustainably with its available resources
Why does primary succession take so much longer than secondary succession to reach climax community and about how long does it take?
Soil is not present at the beginning of primary succession. The formation of soil can take hundreds to thousands of years.