« previous next »

Author Question: What do the simplest vertebrates lack? A) Jaws B) Notochord C) Central nervous system D) None ... (Read 52 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?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Primary glands of the endocrine system. Primary glands of the endocrine system.
Structures of the respiratory system. Structures of the respiratory system.
The respiratory system. The respiratory system.
The urinary system: Anterior view of the urinary organs of a female The urinary system: Anterior view of the urinary organs of a female
Female Reproductive System Female Reproductive System
Comparison of Somatic and Autonomic Nervous Systems Comparison of Somatic and Autonomic Nervous Systems
Video: Condensation and Hydrolysis Animation

For a complete list of videos, visit our video library