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 464 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
Excellent

ecabral0

  • Member
  • Posts: 310
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

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?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

A variety of reptiles. A variety of reptiles.
Salt glands as an adaptation for marine life. Salt glands as an adaptation for marine life.
Aquatic Marine Ecology Aquatic Marine Ecology
The ability to roll the tongue is one of several traits that represent the dominant allele. The ability to roll the tongue is one of several traits that represent the dominant allele.
Marine oil pollution comes from many sources Marine oil pollution comes from many sources
How much energy is evolved during the reaction of 53.4 g of Al, according to the reaction ... How much energy is evolved during the reaction of 53.4 g of Al, according to the reaction ...
Video: Role of complement proteins

For a complete list of videos, visit our video library