« previous next »

Author Question: What do the simplest vertebrates lack? A) Jaws B) Notochord C) Central nervous system D) None ... (Read 25 times)

BrownTown3

  • Hero Member
  • *****
  • Posts: 564
on: Aug 22, 2018
What do the simplest vertebrates lack?
 A) Jaws
  B) Notochord
  C) Central nervous system
  D) None of these choices

Question 2

It is believed that over the past two million years, world sea level has ____.
 A) changed, but not significantly
  B) varied from about 6 meters above to about 125 meters below present position
  C) varied from about 125 meters above to about 6 meters below present position
  D) not changed


dlook33

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Aug 22, 2018
Answer to Question 1

A

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

The lymphatic system in humans. The lymphatic system in humans.
Major features of the Solar System (not to scale) Major features of the Solar System (not to scale)
Male Urogenital System Male Urogenital System
Ethnographic studies of the Baka pygmies of central Cameroon, and other people who still live as ... Ethnographic studies of the Baka pygmies of central Cameroon, and other people who still live as ...
Development of the Digestive System "تطوير الجهاز الهضمي" Development of the Digestive System "تطوير الجهاز الهضمي"
A taproot system consists of a large main root together with its lateral branchings A taproot system consists of a large main root together with its lateral branchings
Video: Lower Limb Arteries Animation

For a complete list of videos, visit our video library