biodiversity

2. the first evolutionist to believe that organisms change over time.
3. evolution an increase in the difference among de scendants of a single ancestral species as time passes
6. giant reptiles that ruled the earth during the jurassic period under mesozoic era.
7. structures structures in different organisms that are similar In function but different in origin
9. evolution an increase in similarities among species derived from different ancestors as a result of similar adaptation to similar environment
11. is the variety and variability of life on Earth. Is typically a measure of variation at the genetic, species, and ecosystem level.
15. relating to or denoting the earliest eon of the earth's history, preceding the Cambrian period and the Phanerozoic eon.
17. remains as once living things including bones, shell, teeth and also faces
18. structures parts of different organisms that are similar in structure but serve different functions
19. ability to survive and produce offsprings

1. the era between the Precambrian eon and the Mesozoic era, or the system of rocks deposited during it.
4. species change over time
5. differences in traits of organisms in a population
8. the process by which an organism produces offspring and thus perpetuate the species
10. ability of an or to adjust and thrive in a given environment.
12. a segment of DNA or RNA that codes for protein or RNA, a molecular unit of hereditary trait.
13. relating to or denoting the era between the Paleozoic and Cenozoic eras, comprising the Triassic, Jurassic, and Cretaceous periods.
14. meaning "new life", also known as the Age of Mammals, because the extinction of many groups allowed mammals to greatly diversify so that large mammals dominated the Earth.
16. an invertibrate, it lived in a shallow marine environment during ordovician and silurian period.
20. this theory of lamarck states that organism change in response to the environment