Why does the blood experience difficulty returning to the heart from the legs?

Woese a. was involved in determining rRNA sequences AND proposed breaking eukaryotes into domains Archaea and Bacteria. b. proposed breaking prokaryotes into two groups AND was involved in refining the Gram stain for classification purposes. c.

Roundworms are A. Acoelomates B. pseudocoelomates C. coelomates D. none of the above

What did Darwin believe? A. Darwin believed that all organisms have a common ancestor. B. Darwin believed that all organisms were created simultaneously by the force of nature. C.

Geothermal energy is a renewable energy source powered by

Which biotic factor that make their own food

Name and describe the five main structures of the hair root

true or false: more people live in development nations than live in developed nations

What is the part of the scientific method where this part of the experiment that is not being tested but being used for comparison?

What is a centrosomes role in mitosis?

A diabetic client in labor tells the nurse she has been feeling nauseous since her labor started and did not take her insulin even after eating some soup and crackers. one hour later, she reports increased nausea and feeling flushed.