Answer:
conservation is saving and reducing. To help save the earth .. Conservation is the preservation or efficient use of resources,
Explanation:
From lowest to highest hierarchy it would be: planet, star, solar system, galaxy.
I’m not sure but I think the answer is B or D
False there may be two or more dependent variables in a well designed experiment
A good vector to genetically altered respiratory cells might be A VIRUS THAT HAS BEEN GENETICALLY ALTERED TO CARRY NORMAL HUMAN DNA.
Gene therapy is a medical method of treatment which uses genes to prevent or treat diseases. The method is used to correct the defects in genes which is causing a disease. In order to insert a normal gene to replace the defective one, a vector, which will carry the gene is needed. The vector that is usually used in this case is a virus, which has been doctored to carry a normal human DNA.