Of course, the animal or plant is not thinking.How do i change my characteristics?Natural selection is the force for change, not the individual conscious decision. <span />
<span>Mitosis is the usual method of cell division, characterized typically by the resolving of the chromatin of the nucleus into a threadlike form, which condenses into chromosomes, each of which separates longitudinally into two parts, one part of each chromosome being retained in each of two new cells resulting from the original cell.
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Answer:
The correct answer is : 2- Energy.
Explanation:
- Waves are produced due to vibration or movement of molecules about their mean position in response to any disturbance generated on them.
- The disturbance transmits energy into the stationary molecules present in a medium.
- After taking up this energy the stationary molecules begin to vibrate about their mean position, hits the molecules next to it and transmit its energy to them.
- This process continues and eventually the energy gets transmitted through all the stationary molecules present in medium resulting in the generation of a wave.
- However, waves does not always require a medium to travel, but vibration or oscillation is necessary. Based on this two types of waves are:
- Electromagnetic Waves (Light) : Here the electric and magnetic fields oscillates with respect to each other and generates a wave.
- Mechanical Waves (Sound) : It requires a medium to travel and the waves moves by episodes of compressions and rarefactions.
- Based on direction of vibration, waves are of two types:
- Longitudinal waves - Vibration occurs in a direction that is parallel to the direction of motion of the wave.
- Transverse waves - Vibration occurs in a direction that is perpendicular to the direction of motion of the wave.
Answer:
Autolysis takes place, which causes the skin to blister.
Explanation:
Answer:
E) none of the above
Explanation:
Mining can be defined as the process of extracting mineral resources from the Earth's surface such as seem, placer, ore-body, vein etc. Some examples of minerals that can be mined are gravel, gold, chalk, petroleum, limestone, coal, potash, rock salt etc.
The various techniques used for mining includes the following;
1. Sluicing.
2. Placer mining.
3. Hard rock mining.
4. Hydraulic mining.
Acid mine drainage can be defined as the quantity of acidic water that is being drained or flows out from a mining site.
Generally, acid mine drainage occurs when surface water infiltrates spoil banks where chemical reactions (oxidation) occur with pyrite such as iron sulphide.
