In order for cells in multicellular organisms to exchange gases, a circulatory system must be present.

a. true

b. false

What will happen if the blue whale gets extinct

One difference between bacteria and viruses is

Water harvesting, the collection of rainfall and run off for future use, has been practiced for thousands of years; but in some regions where it was previously used it has been forgotten.

True because it says true on there?

What type of biological molecule is dna helicase?

What region of the united states is beef and hog production prevalent?

What serine protease proteolytically degrades both fibrin in clots and native fibrinogen in the circulation into a series of well-characterized end-products collectively known as fibrin/fibrinogen degradation products?

Write a sentence with scientific law in it

Through what process do the cells of the blastocyst develop into all of the cells of a growing fetus's organ systems? A. Implantation B. Fertilization C. Differentiation D. Meiosis

What percentage of chromosomes normally found in the body cell of an organism do gamete cells contain after meiosis A - 24% B - 50% C - 60% D - 100%