Which of the following statements is incorrect? A stem holds the plants leaves up to the sunlight.
The skeleton protects animals from the weather.
A waxy outer covering helps a plant reduce water loss.
The skeleton supports the body of animals.

as resources become scarce because of population growth, the growth decreases after few years due to lack of resources and food.

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the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.