Answer:
These are classified as the Main Sequence Stars.
Explanation:
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Answer:
A biome is a large area characterized by its vegetation, soil, climate, and wildlife.
individual: a distinct, indivisible entity; a single thing, being, instance, or item.
Explanation:
Answer:
77.5 years
Explanation:
Preliminary data indicates that life expectancy at birth in the United States had reached a record high in 2003.
The answer is <span>b. transport proteins.
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Facilitated diffusion is the process of passive transport, which means without using of energy, of ions and molecules across a cell membrane. Although, this process does not require energy such as active transport, transport proteins are required. The role of transport proteins in facilitated diffusion is to provide a hydrophilic route within hydrophobic lipids of the membrane, and that way facilitate ions and molecules to cross the membrane.
