Answer:
It is difficult to obtain a final conclusion with this information, but it is possible that the sample doesn't contain living organisms whose genetic material is composed of DNA. Another possible reason for this result is that the DNA extraction protocol used in the experiment is not suitable for this sample.
the food must be broken down by use of enzymes,during the process of respiration.
Answer:
in a plant lyfe cycle there is used for 2 generation dat occur between 1st sphoropytic generation nd de next type de eggs nd de sperms r produced
