Answer:
less dense than frozen water..
Explanation:
frozen h2o is heavier, weighs more...
Answer:
Models are used to simulate reality and make predictions. The major limitation of models is that they are 'idealizations' or 'simplification' of reality and thus cannot possibly replace reality. A number of assumptions are made during modeling and this causes differences between model and reality.
Ultimately, all scientific knowledge comes from:
Select one
O a. textbooks
O b. experimentation
<u>O c. experimentation & </u><u>observation</u><u> </u><u>✓</u><u>✓</u><u>✓</u>
O d. observation
Answer:
transformation
Explanation:
Transformation is one of the three methods of genetic recombinant in bacteria. The other two are transduction and conjugation. Transformation occurs when the bacterial cells take up the DNA and which in turn changes their phenotype.
Transformation requires that there should not be any cell to cell contact. In the experiments performed by Griffith, the heat-killed virulent S strains were mixed with live R strains. The R strain took the DNA of heat-killed S strains which in turn converted them into the virulent strains. Since this horizontal gene transfer did not include any cell-to-cell contact, he called the process transformation.