A shark's skeleton is different from a goldfish because

a. the shark's skeleton is very dense.

b. the shark's skeleton is quite rigid.

c. the shark's skeleton is composed of bone.

d. the shark's skeleton is composed of cartilage.

Distinguish between microtubules and microfilaments. Describe two functions of each kind of structure.

Kuda, kelelawar dan lumba lumba digolongkan kedalam satu tingkatan takson yang sama yaitu

Which ranks the terms in order of increasing size and the number of space objects contained within? Size: universe galaxysolar system Number of objects: universe galaxysolar system Size: solar systemgalaxyuniverse Number of objects:

Qué sucede cuando una persona tiene muy poco o demasiado costeroides?

Which of the following is NOT part of Koch's postulates? A) the microorganism is never found in healthy animals. B) the microorganisms is always found in diseased animals. C) the microorganism must cause disease in healthy animals.

Which of the following statements is NOT consistent with evolution by natural selection? a. Natural selection can lead to speciation. b.

How does the extra dopamine released during drug use affect the brain?

No fossils of Homo neanderthalensis have been found in Africa, but many African populations have traces of Neanderthal DNA.

What is heart what is the job of the herat

Select the correct answer from each drop down menu. Arteries usually carry oxygenated blood away from the heart. However, the pulmonary artery carries deoxygenated blood.