Answer;
-All the above
- the reduction or elimination of pore space in soil
- the weight of heavy machinery on soil
- livestock walking over soil
Explanation;
-Soil compaction is a process in which the soil, which is consisted of air and water particles, is reduced to some extent by applying weight. This process involves removing air from the soil particles without any significant change in the amount of water consisted in the soil.
-It is very important because it provides the necessary flat base which provides the crucial support for the buildings, various construction foundations, roads, pavements and any other construction structures.The process of compaction gives the soil higher resistance and greater stability.
Answer:
If a large molecule need to move against the concentration gradient the struc of an energy rich compound such as Adenosine tri phosphate or ATP is need to be used.
Explanation:
ATP provides energy to carry out the uphill transport of molecule across the plasma membrane by the helps of specific ion channel.Uphill transport is a type of membrane transport process in which a molecule is being transported against its concentration gradient that means the molecule is moving from low concentration region to high concentration region.
In general this type of transport is Thermodynamically unfavorable which is made favorable by the energy derived from the hydrolysis of ATP .
Answer:
Living organisms must take in energy via food, nutrients, or sunlight in order to carry out cellular processes.
Explanation:
