Evidence
fossils provide evidence a time line which shows this.
What is the history of life?
The oldest Layer of fossils is on the bottom and the newest fossils and dirt are on the top.
What is the law of super position?
When an animal can not adapt to their ever changing environment.
What is becoming extinct?
A leaf impression
What is a fossil?
A scientist described two modern-day species as sharing a common ancestor.
what is both species evolved from one species that lived in the past.
Evidence of evolution that shows two species having similar DNA and being closely related?
What is Genetic Evidence?
the differences in characteristics within a species
What is Variation?
Blending in with your environment
What is camouflage?
Ages and physical similarities of fossils
What is how fossils in the fossil record are classified?
a trait that improves chances of survival and reproduction for a group of individuals in a population which changes over time.
What is an adaptation?
These best describe the tiny leg bones that some whales have, which do not aid in their movement or serve any other function?
What are structures that have lost all or most of their function over evolutionary time?
Two salamanders of the the same species with different visual traits.
What is variation?
Variation provides the raw material upon which natural selection acts in a population.
What is improved survival rate?
The time it takes for half of a material to break down.
what is a half life
The lack of genetic variability prevents a species from adapting to environmental changes, making the species more prone to extinction.
What is genetic variation?
Evolution evidence that shows very early similarities within fetus's across different species.
What is embryological evidence?
Different food sources change something about a bird.
What is the beak shape and size?
Giraffes that have longer necks survive a dry season by eating leaves from the tops of trees. Those giraffes breed more successfully that year.
What is Natural selection?
When an animal blends in with their background.
What is concealing coloration?
The organisms that are best adapted to their environment will survive long enough to pass on their genetic traits to future generations.
How Natural Selection leads to the evolution of new species?
A structure that shows how certain species have inherited a trait from an ancestor.
What are homologous structures
Adaptations, which are beneficial genetic traits, are critical to the survival of a species by providing alternative ways to adjust to a changing environment and prevent extinction relates to this theory.
What is the theory of evolution?
the process by which individuals that are better adapted to their environment are more likely to survive and reproduce
What is Natural selection?
when an organism’s color is broken up with a pattern like stripes or spots so it confuses or conceals when alone or in a group.
What is disruptive coloration?
Within a population, variation increases the likelihood that some individuals will be able to survive if the environment changes. The following causes variations within a population.
What are changes in the genetic material?