The cell membrane is also called selectively permeable membrane for the sole reason being it is selective in nature.
It forms a physical barrier and as a barrier between the cell and the external environment as it allows only selected necessary molecules to pass through it and at the same time prevents entry of unwanted / unnecessary substances.
It also regulates the entry and exit of molecules into and out of the cell.
The cell membrane permits the entry of vital molecules like
<span>water, oxygen, amino acids and glucose into the cell as they are crucial for various life processes and at the same time metabolic waste products are expelled through the cell membrane.</span>
Answer:
<h3><u>Required Answer</u><u>:</u><u>-</u></h3>
An increase in population, resources, natural disasters, and catastrophic events. Weather, natural disaster, human activity. As a population reaches its carrying capacity, resources become more scarce.
Answer:
1. Terrestrial ecosystem, 2. Aquatic ecosystem.
Explanation:
A terrestrial ecosystem is an ecosystem that exists on land. An aquatic ecosystem id an ecosystem that exists within a niche.
The final phase the 5th phase I think
1. Alloy = Compound
2. Gold = Au
3: Salt Water = Liquid Solution
4. Potassium = K
5. Neutron = No Electric Charge
6. Sugar = Solid Solution
7. Sodium = Na
8. Proton = Positive Electric Charge
<u>I'm sure these are the right answers, but if I got anything wrong, please feel free to state/comment about it. Hope this helps!!</u>
