Answer: Osmosis is the spontaneous net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides.
Explanation:
They makeup an important class of lipids for the construction of cell membranes.
The answer is, "200 years ago".
Answer: <u>Option B; photosynthesis</u>
Explanation: Carbon is present in the atmosphere in gaseous form as carbon dioxide majorly. And, only plants can take up CO2 and use it to make glucose. This reaction takes place through photosynthesis, taking place in the leaves of the plants. Rest activities mentioned in option A, C and D, these all release CO2 into the atmosphere.
Answer:
B
Explanation:
An object at rest will stay at rest unless acted on by an unbalanced force and an object in motion will stay in motion unless acted on by an unbalanced force.
eg. Arrow in space with no gravity will go forever because of the lack of gravity and no air resistance but the opposite is true on Earth.