All above I think I don't know
<span>The bone with insufficient or abnormal collagen would fracture easily compared with a healthy bone. Collagen is the most abundant protein in our bodies , and is found in muscles, bones, skin , blood vessels, digestive system and tendons. Collagen provides integrity, firmness and elasticity to their structures, such as bones. Therefore a healthy bone has high integrity and firmness and thus can resist fractures and other mechanical damages.</span>
I. Facilitated diffusion is your answer.
Active transport <span>is the movement of molecules across a cell membrane into a region of higher concentration, this process requires energy. Both osmosis and diffusion are passive transportations which means that they don't require energy.
Hope this helps!
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Answer:
The correct answer is option b. "by their dominant processes that formed them".
Explanation:
Mountains are classified in four different types according to the dominant processes that formed them. The four different types of mountains are: upwarped mountains, fault-block mountains, folded mountains and volcanic mountains. Upwarped mountains are produced by a differential of pressure from inside the Earth that pushed the crust upwards. Fault-block mountains were formed by tectonic plate movement, folded mountain when two plates move together, while volcanic mountains are formed by a crack in the Earth known as volcanic vent.
