Answer:
If the type of food available changes, then the frequency of beak also changes.
It's legit how plants live. Sun feeds plants, plants feed animals/us, animals feed animals/us, everything living works better when it eats
Answer:
D. A bicycle rusting.
Explanation:
A. is incorrect because tearing a piece of paper is a physical change, not a chemical change.
B. is incorrect because we are just heating up the object. That only changes how fast the particles are moving and the change in state of matter.
C. is incorrect because we are adding heat to change a state of matter (from solid to liquid) and it is a physical change.
Therefore, only D. is the correct answer. Iron rusts, and when it does, it chemically changes into an iron oxide (rust).
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Explanation:
