Large group of ecosystems that share the same climate and have similar types of communities
Large group of ecosystems that share the same climate and have similar types of communities

Large group of ecosystems that share the same climate and have similar types of communities
Scientists think that ____________ were the first cells.
The amount of time required for 50% of a radioactive isotope to decay is
An organism that eats decomposed parts from plants and animals is a ____________
A simple model that shows how energy flows through an ecosystem
A model representing the many intersecting food chains and pathways in which energy flows through a group of organisms
A diagram that can show the relative amounts of energy, biomass, or number of organisms in each trophic level in an ecosystem
An organism that consumes only plants is called a(n)
An organism that consumes only animal flesh is called a(n)
An organism that eats both plants and meat is a_______________