1. What hypothesis is being tested in this experiment? 2. Compare the growth of the two groups of plants in this experiment.

3. Read the introduction and provide an explanation for why one group of plants grew better than the other group of plants.

4. What caused the plants grown in the sterilized soil to grow so much slower than the plants grown in the non-sterilized soil?

5.Does this experiment indicate that mycorrhizae are necessary for the proper growth of plants? Explain

answer: a. a gene that causes a specific trait.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.