14. Choose the best explanation of the difference between evolution and natural selection.
A. Evolution is the idea that species change over time, and natural selection is the idea that nature changes over time.
B. Natural selection is the idea that species change over time, and evolution is the idea that the species' food source also changes over time.
C. Evolution is the idea that species change over time, and natural selection is a mechanism by which evolution takes place.
D. Natural selection is the idea that species change over time, and evolution is the idea that our world changes over time.

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.

common management practices in dairy and poultry farming are: (i) proper shelter facilities and their regular cleaning. (ii) some basic hygienic conditions such as clean water, nutritious food, etc. (iii) animals are kept in spacious, airy, and ventilated place.

light dependent reactions:

light independent reactions:

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