Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions


Adult frogs do not have gills, the frogs are amphibians. With the help of certain blood vessels they absorb oxygen from water through their skins. Some frogs have special skins that can increase its surface area, So that it can intake more oxygen. From the watery areas where O2 is low they move to the areas where they are high.
2 3 2
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts