<span>Scientific theories are useful because they help explain phenomena in the natural world that we previously had no or an incorrect understanding of. They are also useful because they are provisional, and so they change and develop as we gain more knowledge.</span>
Answer:
Osmosis
Explanation:
Passive transport does not require energy for movement in and out of a place or across a membrane e.g a cell.
Osmosis uses passive transport to move materials in and out of a cell by setting up concentration gradient through a distance.
Osmosis can be defined as the movement of molecules or particles of a solution from an area of higher concentration to that of lower concentration through a semi-permeable membrane e.g plasma membrane. As we can see, the difference in concentration is the drive for the transport between the two medium. When the concentration is the same, there won't be any movement again.
Answer:
Two different kinds of flasks were used - regular and swan-necked
Explanation:
In his experimental design, Louis Pasteur used tow flasks. One of the flask was regular flask and the other was swan necked. He used these flasks to boil a meat broth. In the swan neck flask, air could enter but microorganisms could not. As a result, there was no grown seen in that flask. In the regular flask, microorganisms could enter and they spoiled the meat. Hence, the two different types of flasks were his experimental design.
Answer: The vertebral projection oriented in a median plane is called the spinous process
hope this helped!
When an active cold front over takes a warm front is creates tornadoes.
