This topic contains a solution. Click here to go to the answer

Author Question: Some of the dominant marine reptiles of the Mesozoic were reptiles whose ancestors had evolved on ... (Read 188 times)

stevenposner

  • Hero Member
  • *****
  • Posts: 608
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
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
Excellent


Hdosisshsbshs

  • Member
  • Posts: 315
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

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?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

For a complete list of videos, visit our video library