« previous next »

Author Question: Animals with dorsal nerve cords are called A) phyla. B) chordates. C) vertebrates. D) ... (Read 130 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?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

The major classes of vertebrates The major classes of vertebrates
The four ways in which animals exchange heat with the environment are radiation, evaporation, convec The four ways in which animals exchange heat with the environment are radiation, evaporation, convec
Persian leopard (Panthera pardus ciscaucasica), also called Caucasian leopard Persian leopard (Panthera pardus ciscaucasica), also called Caucasian leopard
Earth’s history is divided into nested sets of time--eons, eras, periods, and epochs--and is called Earth’s history is divided into nested sets of time--eons, eras, periods, and epochs--and is called
SSRIs block the reuptake of serotonin into nerve terminals, resulting in increased serotonin levels. SSRIs block the reuptake of serotonin into nerve terminals, resulting in increased serotonin levels.
Curved spines make cocklebur (Xanthium) fruits stick to the fur of animals (and clothing of humans) Curved spines make cocklebur (Xanthium) fruits stick to the fur of animals (and clothing of humans)
Video: Hershey Chase Experiments

For a complete list of videos, visit our video library