Answer: D. Keratin
Explanation: Keratinocytes (pronounced: ker-uh-TIH-no-sites) make keratin, a type of protein that's a basic component of hair, skin, and nails. Keratin in the skin's outer layer helps create a protective barrier.
Answer:
A lunar eclipse occurs when the Moon passes directly behind the Earth into its umbra (shadow). This can occur only when the sun, Earth and moon are aligned (in "syzygy") exactly, or very closely so, with the Earth in the middle.
Explanation:
Answer:
Insulators
Explanation:
The purpose of insulators are to convert the energy into thermal or heat energy
In cellular respiration, the cells take the carbohydrates in and through complex metabolic processes, they break them down and release the energy.
The S interphase is when the DNA splits into two copies of itself
