maybe it's called osmosis?
The correct answer is transduction. Here,<span> foreign </span>DNA<span> is introduced into a cell using a </span>virus<span> or </span>viral vector. Most typically, DNA will be transferred from one bacterium to another using this technique. The advantage of the technique is that physical contact between the donor and receiving cell is not required, and the mechanism is not susceptible to DNase. Transduction has become a routine tool used by molecular biologists to introduce a new gene into a host's genome.
Answer:
a) Two reasons why polythene bags are not environment friendly are as following:
- Plastic bags are made up of non-renewable materials such as polypropylene and their manufacturing and disposal cause greenhouse gases to release in the environment and contribute to global climate change.
- Polythene bags or Plastic bags are non-degradable and break into small pieces in the environment which are then consumed by wildlife or run off into oceans.
b) Yes, the decision of using paper bags is correct as it will minimize the use of plastic bags and also reduce the environmental pollution caused by plastic waste. Paper bags can be reused or recycled again and again and they are easily degradable in the environment causing very less or no pollution.
c) The values associated with the ban on use of polythene bags is to establish a sustainable environment for our present and future generation. It will reduce environmental pollution and will minimize the effect of global warming.
<span>B. They have continued to improve and are still used today.
The course of the Second World War gave rise to the technological advancements that are still being used today but now being improved.
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