Denise and David are testing how plants respond to fertilizer. They use three plants for the experiment. The first is given a cup of Fast Grow fertilizer with no water. The second is given a teaspoon of Sunlight fertilizer with a cup of water. The
third plant is given no fertilizer with a cup of water. Denise and David will not be able to draw a valid conclusion from their
result. Which of the following statements explains why?
Fast Grow
Fertilizer
SunLight
Fertilizer Gel
Plant A
Plant B
Plant C
A There are not enough different types of plants.
B There is no test variable (independent variable).
© Results of the experiment need to be presented in a graph.
More than one test variable (independent variable) has been changed in the experiment.

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."

the answer is a) cell division.

hope this !

the glands which are associated with each description is given below: