The correct answer is: None of the above
Soil formation is affected by many factors that include time, climate (temperature, precipitation), relief, mineral organic materials.
• Precipitation is part of the climatic factors. Precipitation refers to the amount of water (in the form of rain, snow) that a soil gets. Thus, it is one of the most important factor that determinates the formation and characteristics of soil. Precipitation affects both, the amount of erosion and weathering (breakdown of rocks and soil) that occurs.
• Time. It refers to changes of soil as it age. For example, older soils contain more organic matter and are more exposed to moisture and other environmental factors that may change their features.
• Erosion is removal and transportation of material from the Earth’s crust as a consequence of natural processes such as wind or rainfall. Because it includes the removal of the soil it affects its formation.
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:
A food web consists of many food chains. A food chain only follows just one path as animals find food. eg: A hawk eats a snake, which has eaten a frog, which has eaten a grasshopper, which has eaten grass. A food web shows the many different paths plants and animals are connected.
Explanation:
Answer:A
hope this helps
Answer:
i dont know thats a hard one
Explanation: