Population Growth
This term describes the increase in the number of individuals in a population over time.
popular growth
A combination of two or more substances that are physically combined but not chemically bonded.
mixture
This term describes a non-native organism that spreads quickly and causes harm to the environment, economy, or human health.
invasive species
This includes all the living organisms and nonliving factors interacting in a particular area.
ecosystem
Name two factors that can cause a population to increase.
birth and migration
This type of mixture has a uniform composition throughout, such as saltwater.
homogeneous mixture
Name one way humans accidentally introduce invasive species into new environments.
shipping/ballast water, transporting firewood, releasing pets into the wild, moving plants, or travel and trade
These organisms make their own food using sunlight through photosynthesis and form the base of most food chains.
producers (autotrophs)
A forest can support about 500 deer. This maximum number of deer the forest can support is called the:
carrying capacity
This type of mixture has visibly different parts, like trail mix or salad.
heterogeneous mixture
Invasive species often compete with native species for these four important resources.
food, water, space (habitat), and sunlight
This diagram shows multiple interconnected feeding relationships within an ecosystem.
food web
A rabbit population grows from 100 rabbits to 150 rabbits in one year. By how many rabbits did the population increase?
50
This method separates sand from water by allowing the liquid to pass through a filter while the solid remains behind.
filtration
An invasive vine grows over native trees, blocking sunlight and reducing plant growth. This is an example of what type of environmental impact
competition with native species (or loss of biodiversity
This relationship occurs when two species compete for the same limited resource, such as food, water, or space.
What is competition
As a population grows larger, food, water, space, and other resources become limited. This often causes population growth to:
A. Increase forever
B. Stop or slow down
C. Double every year
D. Become unlimited
: B. Stop or slow down
A student dissolves 25 g of sugar in 200 mL of water. No new substance forms, and the sugar can be recovered by evaporating the water. This describes a __________.
homogeneous mixture (or solution)
Which of the following is the best way to help prevent the spread of invasive species?
A. Release unwanted aquarium fish into a nearby lake.
B. Move firewood between forests.
C. Clean boats and equipment before entering a new lake or river.
D. Plant non-native species in protected parks.
C. Clean boats and equipment before entering a new lake or river.
An invasive species enters a lake ecosystem and rapidly reproduces, causing native fish populations to decline. This is an example of how an invasive species can __________.
disrupt ecosystem balance (or reduce biodiversity/outcompete native species