« previous next »

Author Question: Animals with dorsal nerve cords are called A) phyla. B) chordates. C) vertebrates. D) ... (Read 77 times)

Engineer

  • Hero Member
  • *****
  • Posts: 527
on: Jun 22, 2018
Animals with dorsal nerve cords are called
 
  A) phyla.
  B) chordates.
  C) vertebrates.
  D) mammals.
  E) amphibians.

Question 2

Evidence suggests that complex multicellular, water-dwelling organisms first appeared on earth
 
  A) in the early 1920s.
  B) 600 million years ago.
  C) 10 million years ago.
  D) 4 million years ago.
  E) 2 million years ago.


soda0602

  • Sr. Member
  • ****
  • Posts: 313
Reply #1 on: Jun 22, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

Medication errors are three times higher among children and infants than with adults.

Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Relationship between Hox gene number and body complexity in different types of animals. Relationship between Hox gene number and body complexity in different types of animals.
trigeminal nerve trigeminal nerve
People whose behaviors violate norms are often called mentally ill. “Why else would they do such ... People whose behaviors violate norms are often called mentally ill. “Why else would they do such ...
Testing motor function of cranial nerve VII - Puff cheeks Testing motor function of cranial nerve VII - Puff cheeks
First-order sensory neuron with free nerve endings First-order sensory neuron with free nerve endings
The nucleus is bounded by a double membrane called the nuclear envelope The nucleus is bounded by a double membrane called the nuclear envelope
Video: Digestion Animation

For a complete list of videos, visit our video library