Photosynthesis & Plant Power
Along with sunlight, plants absorb this substance through their roots to use in photosynthesis reactions.
Water
In a food chain, energy flows from producers to primary consumers, and then to these types of consumers.
Secondary Consumers
A manatee eating an aquatic plant represents the transfer of a carbon atom from a living part of the ecosystem to this type of part.
Living Part
If rattlesnake populations increase, they will cause a ________ in deer mice.
Decrease
Producers use this green pigment to absorb energy from sunlight.
Chlorophyll
Scientists use these specific models to study the transfer of matter and energy within an ecosystem.
Food Webs
This element makes up about 78% of the Earth's atmosphere, but it must be "fixed" by bacteria in the soil before plants and animals can use it to build proteins.
Nitrogen
A sudden, drastic decrease in the availability of this liquid resource will immediately cause a decline in animal populations across an ecosystem.
Water
A giant sequoia tree transforms matter from water and this gas through photosynthesis to make its own matter and grow massive.
Carbon Dioxide
In an ecosystem containing monkeys and jaguars, fungi and bacteria usually represent this group of organisms.
Decomposers
In the ocean's carbon cycle, many marine animals extract dissolved carbon and calcium from the water to build these hard, protective structures.
Shells
This type of relationship occurs when two different species in an ecosystem try to use the same limited resource, like water or a specific food source.
Competition
If an aquatic Elodea plant is placed in water with oxygen but no carbon dioxide, it will fail to produce these.
Sugars (Glucose)
At each step in a food chain, only a small fraction of this is transferred to the next level.
Energy
These specific microscopic organisms are highly important to Earth's ecosystems because they add nitrogen-based molecules to the soil.
Nitrogen-fixing Bacteria
When a new species is brought into an ecosystem by humans and causes harm because it lacks natural predators, it is known by this term.
Invasive Species
Inside a plant cell, this specific green organelle is the site where photosynthesis takes place.
Chloroplast
An organism, like a wolf or a hawk, that only eats other consumers to obtain its energy is classified as this
Carnivore
The correct pathway for nitrogen starts with nitrogen-fixing bacteria converting nitrogen into this chemical compound.
Ammonia
When excessive amounts of artificial fertilizer wash into a local lake, it can cause a massive overgrowth of this green organism, which ultimately harms the water's oxygen levels
Algae