Biodiversity
Biodiversity exists on a species, ecosystem and ____ level
Genetic
Under his administration, conservation became a central part of federal policy. and he established the first national parks
Teddy Rooseveldt
The earth is approximately how old
4.6 Billion Years
Evolution accounts for both the unity and ______ of life
This human activity is the greatest contributor to climate change
burning fossil fuels
The relative abundance of different species in an ecosystem is know as Species ________
evenness
This decade marked a period of environmental awareness and the establishment of the EPA
The 70's
How long ago did the dinosaurs go extinct
66 Million Years ago
body parts that have the same basic structure but may serve different functions in different organisms. are called _________ structures
Homologous
Humans use the most water for what?
Agriculture
In the United States, 25% of prescriptions contain substances originally derived from
Plants
A preservationist and naturalist who believed that wilderness had spiritual and intrinsic value.
John Muir
Technique used to date materials such as rocks or carbon. Based on known decay rates of radioactive isotopes.
Radiometric dating
Tiktaalik and Archaeopteryx are examples of this type of fossil
Transistional
This ancient civilization serves as a warning for what happens when humans misuse soil
The fertile crescent
Currently 1 in every 5 of this type of organism is threatened with extinction
Mammals
Author of the Silent Spring
Rachel Carson
This eon's Name comes from “Hades” — fitting for its hellish conditions.
Hadean Eon
The human tailbone or the pelvis of a whale are examples of?
Vestigial Structures
This European country uses 100% renewable energy
Norway
In the United States, More than half of this type of ecosystem has been destroyed
Wetlands
Concept introduced by Garrett Hardin in his 1968 Essay. argued Shared resources (air, oceans, grazing land) are overused without regulation
The Tragedy of the commons
The _______ hypothesis posits that an asteroid struck the yucatan peninsula and resulted in the extinction of the dinosaurs
Alvarez
A contemporary of Darwin who arrived at the same conclusions independently while exploring SE asia
Alfred Russel Wallace
a historic international agreement signed in 1987 to phase out the production and use of ozone-depleting substances
The Montreal Protocol