1. what are the levels of ecological organization?
1__organism_ -- one single individual
2_population
- a group of individuals of the same species
community - all the biotic factors in an area
ecosystem
- all the biotic and abiotic factors in an area
5 region - an area on the earth characterized by climate
biosphere
- the entire earth
3
4

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.