The concentration of a drug in the bloodstream c ( t ) at any time t , in hours, is described by the equation c ( t ) = 100 t t 2 + 64 where t = 0 corresponds to the time at which the drug was swallowed. determine how long it takes the drug to reach its maximum concentration.

hi~~

i would say that hybridization occurs frequently in nature, because there are many types of hybrids that have occurred naturally, such as the mule (male donkey + female horse)

i know can you plzz me with this question im sorry i didt answer your question i just need hel.

the last one: artificial selection/genetic engineering

plant breeding is modifying the genetic composition of the plant - but this isn't cloning (which is specifically introducing a gene into a genome). but you are artificially selecting for the phenotype that you want.

the second one is literally genetic engineering - the gene would have been cloned first and then inserted or genetically engineered into the new plant cell (the cotton).