Cambrian
This is another name for the Cambrian Period
What is the Paleozoic Era?
______________ were the first true vertebrates and were first present during the Ordovician period.
What are fish?
This is the name of the first semi-aquatic animals present on Earth
What is a tetrapod?
What is heterozygous?
The most common type of petrification is called
What is fossilization?
The Cambrian Period was known as "the age of the ____________"
What is trilobite?
The Ordovician Period was known as "the age of the________________"
What is invertebrate?
The Devonian Period was known as "the age of the_________________"
What is fish?
Genes that are always expressed are called
What is dominant?
What is the scientific method?
Unicellular organisms were the first living things that first appeared during the Cambrian period. They are also known as
What are prokaryotes?
Multicellular organisms were abundant during the Ordovician period. Another name for multicellular organisms is
What is eukaryotes?
These living things began to show great diversification on land during the Devonian Period
What are plants?
The physical features that you can visually observe on an individual is called
What is a phenotype?
Paleontology is the scientific study of
What is the life of the geological past?
These were the climate conditions during the Cambrian period
This was one of the main reasons why the Ordovician period ended with a mass extinction
What is a meteor?
This classification of animals became abundantly present during the Devonian Period
What are arthopods?
The letters on the outside of the Punnett square stand for
What are each parents' alleles?
The three main categories of rocks are
What are igneous, sedimentary, and metamorphic?
This was when the Cambrian Period began
When was 541 to 485 million years ago?
When was 485 to 444 millions years ago?
This was when the Devonian Period began
When was 419 to 359 million years ago?
The collection of probabilities of inheriting a specific trait from a parent is called
What is a genotype?
What are Kingdom, Phylum, Class, Order, Family, Genus, and Species?