Describe a chemical indicator. What is it? What is it used for? How does it work?

What does resonance result in? quieter sounds frequency amplitude louder sounds

Sweating and breathing is an example of differentiation specialization maintaining homeostasis metabolism

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils