Habitats
The main factor that limits a populations size and growth is?
competition
How many global ecosystems do we have?
3
What biome is taken over by grass and small plants?
the savanna or tropical grass lands
90% of energy in food is lost as what before it gets to the next level in the pyramid?
heat
What is the relationship called where one organism benefits and the other is harmed?
parasitism
What do you call a species role or position in an ecosystem?
a niche
The ocean ecosystem covers how much of the earths surface
70%
Producers in the desert have to be what?
drought-resistant
The flow of energy in a pyramids goes from what to what?
producers to consumers
What is the relationship called when both species benefit?
Mutualism
How many basic needs do most living organism need to have with in an ecosystem?
5
The terrestrial is the most what ecosystem?
diverse
Trees that lose there leaves in the winter are known as what?
deciduous trees
In an energy pyramid matter is constantly what?
recycled
What is relationship called where one species benefits and the other is unaffected?
commensalism
What layer in the rain forest provides home for 90% of lire in a rain forest?
canopy
The terrestrial is divided into 7 biomes these are determined by what?
temperature and precipitation
A group of organisms within a species living in the same area are called what?
a population
Nitrogen is recycled by a process called what?
aeration
This symbiotic relationship is the opposite of competition what is it?
cooperation
What is the rule called that states no two species can coexist if they occupy the same niche?
the competitive exclusion principle
What is the base of the freshwater food web?
Plants and Plankton
What biome gets the most precipitation?
Tropical rainforest
Heat lost in the food web is ether put in the atmosphere or re radiated back to where?
outer space
In competition the species that loses either goes extinct or does what?
learns to adapt to a new niche