Answer:
d.) all of the above
changing and separating the location of continents
Answer:
The scientific method. When conducting research, scientists use the scientific method to collect measurable, empirical evidence in an experiment related to a hypothesis (often in the form of an if/then statement), the results aiming to support or contradict a theory.
Explanation:
Sickle-cell anemia is inherited..It is a condition where there are not enough healthy red blood cells to carry enough oxygen through your body...There is no cure for sickle-cell anemia over time damage is done to your vital organs...
trees do not fix N2 from air they fix oxygen with the help of N2 fixing bacteria . so trees do not fix N2
Answer:
Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.