what is ecology?
scientific study of interactions among organisms and between organisms and their environment
what does the biosphere contain?
parts of the planet in which all life exists
Explain the relationship between ecosystems and biomes
an ecosystem is all organisms that live in a place together with their physical environment. A biome is a group of ecosystems
Name Biotic factors
animals, plants, mushrooms, bacteria
Name Abiotic factors
precipitation, sunlight, heat, soil, air
why are many ecological phenomena difficult to study
they take long periods of time to grow