Because it determines if it is isolated or not. This means if other substances can enter or not. This usually relies on the membrane with it´s pores. The pores help the membrane be selectively permeable in what it lets in and out.
mechanical, kinetic, potential, gravitational, thermal, chemical, electrical, light, radiant, sound, and nuclear.
The correct answer of the given question above would be NUTRIENT-POOR SOIL. The characteristic about the Tundra biome listed below that does not contribute to a reduction of carbon dioxide on earth is the nutrient-poor soil. Other choices for this question include permafrost, carbon dioxide sink and <span>plants and their trapped carbon dioxide are frozen in the earth. </span>
Carbon dioxide because its a fas
Answer:
Explanation:
Nucleotides are building blocks of nucleic acids (DNA and RNA). A nucleic acid contains a chain of nucleotides linked together with covalent bonds to form a sugar-phosphate backbone with protruding nitrogenous bases. For example, DNA contains two such chains spiraling round each other in the famous double helix shape.
