Which items did mendeleev write down on notes cards while he was observing different elements

Which best example best demonstrates the importance of having knowledge of evolutionary relationships? a. illustration of a plant b.organ transplantation between species c. blood donation from a human d. do you need sequence of an insect.

Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins

In the sentence "a mining company will consider the distribution of coal when deciding how to mine the coal," what does the word distribution mean?