Lesson 1
The word ____ refers to the many different kinds of life on earth.
a. biodiversity
b. ecosystem
c. genetic
Biodiversity
An ____ species is found in only one place on earth.
A. Endangered
B. Endemic
C. Extinct
Endemic
A(n) _____ is a sudden change in the genes of a living thing.
A. adaptation
B. mutation
C. speciation
Mutation
In ____, one life form benefits and the other is harmed.
A. Commensalism
B. Mutualism
C. Parasitism
Parasitism
Biodiversity provides ___ benefits, such as greater sales of food.
A. Economic
B. Ecosystem Services
C. Staple Crop
Staple Crop
Differences between members of the same species are caused by ______ diversity.
a. biodiversity
b. ecosystem
c. genetic
Genetic
All members of an ___ species have died.
A. Endangered
B. Endemic
C. Extinct
Extinct
A(n) ___ is a trait that makes a living thing better suited to its environment.
A. adaptation
B. mutation
C. speciation
Adaptation
Lichens are a combination of cyanobacteria, algae, and fungi. These life forms help each other to survive. This relationship is called ____.
A. Commensalism
B. Mutualism
C. Parasitism
Mutualism
Corn, rice, and wheat are __ that provide most of our food for people around the world.
A. Economic
B. Ecosystem Services
C. Staple Crop
Economic
The many different kinds of wild places on Earth are part of ___ diversity.
a. biodiversity
b. ecosystem
c. genetic
Ecosystem
Species that are at risk of disappearing are ___.
A. Endangered
B. Endemic
C. Extinct
Endangered
The formation of a new species is called ___.
A. adaptation
B. mutation
C. speciation
Speciation
In a relationship called ___, one life form benefits and the other is neither harmed nor helped.
A. Commensalism
B. Mutualism
C. Parasitism
Commensalism
Many different ___ are provided by healthy ecosystems.
A. Economic
B. Ecosystem Services
C. Staple Crop
Ecosystem Services
A _____ is an example of an ecosystem.
A. Lynx
B. Swamp
C. Gene
D. Population
Swamp
Scientists think there are ___ more species yet to be discovered.
A. Dozens
B. Hundreds
C. Thousands
D. Millions
Millions
Through natural selection, individuals best suited to their environment pass on their ____ to their offspring.
a. mutations
b. species
c. genes
d. diet
Genes
Bees help plants reproduce through ___.
A. pollination
B. mutation
C. parasitism
D. hatching
pollination
The healing properties of natural compounds can be used to make ___.
A. genes
B. oxygen
C. soil
D. medicines
medicines
An example of an inherited trait is _____.
A. Hair Length
B. A Job
C. A sunburn
D. Eye Color
Eye Color
To estimate numbers of species scientists count species in a small __ of a large area.
A. Picture
B. Sample
C. Map
D. Pond
Sample
New species can form when an isolated __ is exposed to new environmental conditions.
A. Individual
B. family
C. Trait
D. Population
Population
By carrying acorns away from an oak, squirrels are helping the tree with ___.
A. pollination
B. decomposition
C. seed dispersal
D. shelter
seed dispersal
The __ of wild plants can be used to improve food crops.
A. smell
B. genes
C. locations
D. recipes
genes