Which of these statements best describes the connection between biodiversity and evolution?
Without a lot of
biodiversity, organisms are more likely to survive, so they have more time to adapt.
The more biodiversity an area has, the greater the chances of new species arising.
Evolution depends upon low biodiversity to keep population sizes down, which increases numbers of genes.
If biodiversity is high, then more predation will take place, preventing species from evolving.
9 answers
The more biodiversity an area has, the greater the chances of new species arising.
Charles Darwin's theory of evolution describes how species evolve due to natural selection. Which of these is NOT evidence of natural selection
The snowshoe hare is white in winter and brown in summer
Mint plant varieties are crossed to express desirable traits
Camels have long, bushy eyelashes
Galapagos finches have stronger beaks after years of drought
The snowshoe hare is white in winter and brown in summer
Mint plant varieties are crossed to express desirable traits
Camels have long, bushy eyelashes
Galapagos finches have stronger beaks after years of drought
Mint plant varieties are crossed to express desirable traits
Fox
Hawk
Kinglet
Salamander
"Pine M
Squirrel
Borer
Oak
Akorns
Pine
Decomposers
A new organism moves into an ecosystem and its major food source is the pine borer. Which animals in the food web will form a competitive relationship with the new organism?
Fox and Hawk
Salamander & Kinglet
Squirrel & Salamander
Kinglet and Fox
Hawk
Kinglet
Salamander
"Pine M
Squirrel
Borer
Oak
Akorns
Pine
Decomposers
A new organism moves into an ecosystem and its major food source is the pine borer. Which animals in the food web will form a competitive relationship with the new organism?
Fox and Hawk
Salamander & Kinglet
Squirrel & Salamander
Kinglet and Fox
Squirrel & Salamander
Herbivores and carnivores are both types of consumers in a food web but they are on different trophic levels.
Why are herbivores and carnivores on ditterent trophic levels?
Carnivores have more available energy and are at a lower trophic level because they receive energy directly from producers
Carnivores have more
Herbivores have more
available energy and are
available energy and are
at a higher trophic level
at a higher trophic level
because they receive
because they receive
energy directly from
energy directly from
herbivores
carnivores
Herbivores have more available energy and are at a lower trophic level because they receive energy directly from producers
Why are herbivores and carnivores on ditterent trophic levels?
Carnivores have more available energy and are at a lower trophic level because they receive energy directly from producers
Carnivores have more
Herbivores have more
available energy and are
available energy and are
at a higher trophic level
at a higher trophic level
because they receive
because they receive
energy directly from
energy directly from
herbivores
carnivores
Herbivores have more available energy and are at a lower trophic level because they receive energy directly from producers
Carnivores have more available energy and are at a higher trophic level because they receive energy directly from herbivores.
deer
grasshopper
shrubs and trees
If additional snakes were introduced into this ecosystem, what would most likely be an immediate result?
The rabbit and the shrew populations will decrease
The hawk and the
mountain lion populations will decrease
The shrew and the
grasshopper populations
will increase
The squirrel and shrew populations will increase
grasshopper
shrubs and trees
If additional snakes were introduced into this ecosystem, what would most likely be an immediate result?
The rabbit and the shrew populations will decrease
The hawk and the
mountain lion populations will decrease
The shrew and the
grasshopper populations
will increase
The squirrel and shrew populations will increase
The shrew and the grasshopper populations will increase.