Frequency- pitch
Wave length- pitch
Amplitude- pitch
A. Hydrogen ..................
A nucleotide consists of a nucleoside connected to a phosphate group, so the answer will probably be "A"
Answer:
first- class proteins comes from eggs , meat , fish and dairy products while non - animals related foods ,like vegetables and fruits, provide second - class proteins . first - class proteins contain a necessary amount of these important amino acids , but second - class proteins only contains some of them.
Explanation:
Answer:
Worms live in the soil. But after a rain, soil pores and worm burrows fill with water. The worms can't get enough oxygen when the soil is flooded, so they come to the surface to breathe.