in need help asab Amphibians change from a water-dwelling form to an adult form that usually lives on land near a body of water. Which specialized structures allow an adult amphibian to live on land and still maintain its internal balance? O A. Gills O B. Tail C. Fins O D. Lungs

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled