Abiotic & Biotic
What is the main difference between biotic and abiotic factors?
Biotic factors are alive or once-living where abiotic factors are non-living physical.
What is a producer?
An organism, usually a plant or algae, that makes its own food using sunlight through photosynthesis.
The lowest layer of the atmosphere where all weather occurs
troposphere.
What are the different levels in a food web?
Organisms that make their own food, usually through photosynthesis
Definition Energy Transfer
Heat is the transfer of thermal energy due to a temperature difference.
What are 3 examples of abiotic factors?
Sunlight, water, and temperature.
What is an apex predator?
A predator at the top of the food chain with no natural predators.
This layer is located above the stratosphere and is the coldest layer.
mesosphere
Definition of Decomposer
A consumer that feed on dead maintence
What is the unit for energy transfer?
Joule
What are 3 examples of biotic factors
Plants, animals, and bacteria.
What is the ultimate energy source?
For almost all food chains, the Sun provides the initial energy.
This layer contains the ozone layer, which protects Earth from UV radiation.
stratosphere
What is a top predator?
A carnivore at the top of the food web with no natural predators.
What happens if there is no temperature difference?
No net heat transfer occurs.
Is soil biotic or abiotic?
Soil is considered abiotic because it is composed of rock particles, minerals, and nutrients, though it
Detritivores
digest dead matter internally.
he outermost layer of the atmosphere.
exosphere
What is the base of most food webs?
Producers
How does energy transfer work in a closed system?
Energy is conserved, transferring from higher temperature systems (or systems with higher internal energy) to lower ones.
What are some biotic interactions?
Predation, competition for mates, and symbiosis.
What is the difference between a food chain and a food web
A food chain follows a single, direct path of energy, while a food web consists of many interconnected food chains showing all feeding relationships in an ecosystem.
As you go higher in this layer, the temperature actually increases, making it very hot.
thermosphere
Definition of Heterotrophs
Consumers that eat other organisms.
Autotroph
organism that make their own food