The best answer among the choices given is option B. The purpose of an experiment is to compare results with a hypothesis. A hypothesis is defined as a theory or idea that has not yet been proved. In order to turn this into a fact, scientific method should be done and the data obtained is analyzed whether it speaks the truth of the hypothesis.
<span>Melanin helps protect the skin against effects of the sun such as skin cancers and premature aging. In African American skin, melanin provides a sun protection factor (SPF) equivalent to 13.4 compared to 3.4 in white skin and thus the former have lower incidences of skin disorders associated with exposure to the sun.</span>
<span>The tissue is a group of structurally and functionally similar cells and their extracellular matrix. Grouping of those similar cells enables them to carry out a specific function. In the hierarchy of structural organisation tissue is level between cells and a complete organ. Functional grouping together of multiple tissues forms an organ.</span>
The total energy from an isolated system is constant; energy can be changed from one form to another, but can't be created or destroyed.
D. because if you think about the dna is the same as thier genetic material/genes whatever you want to call it.
