Biodiversity
For a(n) _____ to be healthy, it has to have lots of different kinds of plants and animals.
What is an ecosystem?
For most ecosystems the primary scouce of energy is the ______
What is the sun?
Ecologists
What are scientists who study the interactions of organisms and their environment?
Within a poplulatin organisms are always being ___ and ____.
What is born and dying?
Autotrophs like plants convert _____ energy into ______ energy.
What is solar energy converted into chemical energy?
Population
What is a group of the same type of organism living in the same area?
A system can be ______ even as things are being added to and removed from it. If the amount being added and being removed are not equal, than the _____ will not change.
What is stable and a system?
_______ of all the species in the world live in the oecean.
What is 2/3 of all species in the world?
What is biomass?
ecosystem
What are all the living and non-living things interacting in a particular area?
If the number of births and deaths in a given time are equal, than the population size will be ______.
What is stable?
The largest ecosystem in the world.
What is the sea (aquatic ecosystem)
Organisms only hold on to ___ percent of the energy they injest.
What is 10%
stability
What is when something stays mostly the same over time?
If there are more births than deaths in a given time, then the size of the population will ______. If there are fewer births than deaths, then the size of the population will _______.
What is increase and then decrease?
All things depend on
What are other species?
Ecosystem ecology refers to how ______ and ________ come into an enviornment and move around.
What are energy and materials?
Sample
What is a small part that is meant to show what the whole is like?