Option D – amphibians may use their skin for gas exchange is the characteristic feature of amphibians that differs from reptiles.
Explanation:
The amphibian skin is moist, thin and marbled and supplied by blood vessels running on its surface. The moisture present in the skin dissolves the oxygen present in its surrounding which is absorbed by the blood vessels. Special glands help the amphibians to keep the skin moist.
The very thick and tough scales present on the reptiles prevent them to absorb oxygen through their skin. Hence, they breathe and respire through their lungs.
Amphibians have three-chambered heart. They do not develop amniotic eggs. Adult amphibians although spend much time on land, they breed only in water due to the absence of amniotic sac
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True! because if you have more than one variable, you aren’t going to know which variable changed the dependent variable.
Answer:
1. Food web
<em><u>HOPE</u></em><em><u> </u></em><em><u>IT</u></em><em><u> </u></em><em><u>HELP</u></em><em><u> </u></em><em><u>YOU</u></em><em><u> </u></em>
<em><u>THANKS</u></em><em><u> </u></em><em><u>FOR</u></em><em><u> </u></em><em><u>POINTS</u></em>
The sequence of B) nucleotides in a DNA molecule determines the protein that will be produced.
Yes he can.
If he was just neutered today:
Leash walks only so he can urinate and defecate. If he runs around he risks breaking sutures/glue.
If he was neutered a few days ago:
Also leash walks only until sutures fully healed
Remember to keep the e-collar on!
