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Which of these best illustrates natural selection?
owls and birds
respiratory
stomach
collecting in and polluting fresh water supplies
allows for gas exchange between plants and animals.
specific genes
An organism with favorable genetic variations will tend to survive and breed successfully.
foxes and owls
Which organisms are carnivores
owls and birds
respiratory
stomach
collecting in and polluting fresh water supplies
allows for gas exchange between plants and animals.
specific genes
An organism with favorable genetic variations will tend to survive and breed successfully.
foxes and owls
Earth has a variety of environments. Each with different resources. Insecticides and Pesticides affect the environment by _______________.
owls and birds
respiratory
stomach
collecting in and polluting fresh water supplies
allows for gas exchange between plants and animals.
specific genes
An organism with favorable genetic variations will tend to survive and breed successfully.
foxes and owls
Which organisms receive energy from the grasshopper?
owls and birds
respiratory
stomach
collecting in and polluting fresh water supplies
allows for gas exchange between plants and animals.
specific genes
An organism with favorable genetic variations will tend to survive and breed successfully.
foxes and owls
Which organ system contains two large sacs with the exchange of gases taking place in the alveoli?
owls and birds
respiratory
stomach
collecting in and polluting fresh water supplies
allows for gas exchange between plants and animals.
specific genes
An organism with favorable genetic variations will tend to survive and breed successfully.
foxes and owls
All of the following are ways that the atmosphere makes the existence of life on earth possible EXCEPT --
owls and birds
respiratory
stomach
collecting in and polluting fresh water supplies
allows for gas exchange between plants and animals.
specific genes
An organism with favorable genetic variations will tend to survive and breed successfully.
foxes and owls
The bands on a pair of chromosomes represent ?
owls and birds
respiratory
stomach
collecting in and polluting fresh water supplies
allows for gas exchange between plants and animals.
specific genes
An organism with favorable genetic variations will tend to survive and breed successfully.
foxes and owls
Where does a chemical reaction take place in the digestive system?
owls and birds
respiratory
stomach
collecting in and polluting fresh water supplies
allows for gas exchange between plants and animals.
specific genes
An organism with favorable genetic variations will tend to survive and breed successfully.
foxes and owls
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