Is this an example of natural selection: Giraffes with longer necks survive a dry season by eating leaves from the tops of trees. Those giraffes breed more successfully that year.
yes
100
What is the genetic material that organisms pass on to their offspring when they reproduce?
DNA
100
What is a mass extinction?
the death of all members of many different species
100
A mushroom is a producer, consumer or decomposer?
decomposer
200
Which rock layer is the oldest, the bottom or the top?
the bottom
200
True or False: Darwin found the finch population on each island was unique.
true
200
How do producers get the energy their bodies need to survive?
Make their own food
200
What type of organism dominated life during Precambrian time?
prokaryotes
200
Which dating method determines a fossil’s age by comparing it to other fossils?
relative dating
300
If you find two species to be related because they have similar DNA, what kind of evidence did you use?
genetic evidence
300
What is the process by which inherited traits of a population change over many generations
evolution
300
Is this an example of homeostasis: A human body loses too much heat on a cold day, and hypothermia occurs
No
300
How did photosynthesizing prokaryotes that lived during Precambrian time help life on Earth become more diverse?
They made conditions more favorable by increasing the amount of oxygen.
300
What is homeostasis
maintaining stable internal conditions when outside conditions change
400
What is embryological evidence?
having to do with similar patterns of early development
400
What is artificial selection?
the process by which humans breed organisms for certain characteristics
400
What are 4 things living things need to survive?
water, air, food, and a place to live
400
What happen to the dinosaurs and when?
Dinosaurs died out because of a mass extinction at the end of the Mesozoic Era.
400
Darwin’s theory of natural selection consists of four important parts. What are they?
overproduction, genetic variation, selection, and adaptation
500
What is an example of unused body structure?
leg bones in a snake
500
What is a population? (2 characteristics)
a group of organisms of the same species that live in a defined geographical area
500
What are 4 common characteristics of all living things?
They are made up of cells, they respond to change, reproduce, have DNA, and use energy and grow and develop
500
The Permian mass extinction, during which approximately 90% of all marine life became extinct, occurred during which geologic era?
Paleozoic Era
500
Which division of geologic time is also known as The Age of Reptiles?