Author Question: Mammals in the __________ group reproduce without a placenta. a. prototheria b. eutheria c. ... (Read 50 times)

xclash

  • Hero Member
  • *****
  • Posts: 681
Mammals in the __________ group reproduce without a placenta.
 
  a. prototheria
  b. eutheria
  c. metatheria
  d. all of these

Question 2

About __________ mammal species exist today.
 
  a. 400
  b. 2,000
  c. 4,000
  d. 200



bigcheese9

  • Sr. Member
  • ****
  • Posts: 333
Answer to Question 1

Answer c

Answer to Question 2

Answer c



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

For a complete list of videos, visit our video library