Answer: Genetic engineering is manipulating or modication an organisms' dna or cells.
Cloning is a great example of genetic engineering.
Explanation: it is important because it is use to produce medicine such as Insulin and other vaccines for dfferent diseases.
Hope this helped :)
Bob is incorrect because plants gets all the materials they need to grow from H2o(water) and air. Sunlight provides energy to help convert water and carbon dioxide
The time period being referred to is the sensitive period. This time period is also referred to as the critical period. The importance of a critical period is such that it must involve certain stimuli from which an organisms learns and acquires traits. If some of these stimuli are not present in the critical period, the organism has difficulty acquiring the trait or skill, and may even find it to be impossible to learn the skill.
The answer to your question is chromosome chromosome is another term for dna and rna :)