This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Some of the dominant marine reptiles of the Mesozoic were reptiles whose ancestors had evolved on ... (Read 197 times)

stevenposner

  • Hero Member
  • *****
  • Posts: 608
on: Jul 15, 2018
Some of the dominant marine reptiles of the Mesozoic were reptiles whose ancestors had evolved on land, but returned to life in the sea. What physiological evidence supports this interpretation?
 
  What will be an ideal response?

Question 2

What role did the creation of the ozone layer have in the distribution of life forms across the planet and why?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

LVPMS

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jul 15, 2018
Answer to Question 1

Answer: Structure of the fins (same structure as reptile legs/feet) and the development of lungs to breathe air.

Answer to Question 2

Answer: Prior to the ozone layer, life was confined to the sea. Water could protect early life forms from harmful UV radiation. However, ozone also has the capability of reflecting harmful UV rays, so once the ozone developed, life could leave the ocean and begin to colonize the land.


stevenposner

  • Member
  • Posts: 608
Reply 2 on: Jul 15, 2018
Wow, this really help

helenmarkerine

  • Member
  • Posts: 324
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Did you know?

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

Marine myths measured Marine myths measured
The Distribution of Dominant and Minority Groups The Distribution of Dominant and Minority Groups
Marine West Coast (Cfb, Cfc) Marine West Coast (Cfb, Cfc)
Modern fishing fleets deplete marine life Modern fishing fleets deplete marine life
The rate of replacement of a recessive allele d by the dominant allele D by mutation alone. Even tho The rate of replacement of a recessive allele d by the dominant allele D by mutation alone. Even tho
Monkfish, a stealthy marine predator Monkfish, a stealthy marine predator
Video: Role of ATP in muscle movement

For a complete list of videos, visit our video library