three domains , archae- 1st appeared, prokaria- not closed by nucleus and eukaria closed by nucleus
Answer
The answer is watershed and that is an area that catches all the rain and snow.
7. Phloem & xylem.
And I’m not sure about 8
Answer:
All chemical reactions involve energy.Energy is used to break bonds inreactants, and energy is released when new bonds form in products. Endothermic reactions absorb energy, and exothermic reactions releaseenergy. The law of conservation ofenergy states that matter cannot be created or destroyed.
Answer:
It's DNA.
Explanation:
<em>DNA</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>most</em><em> </em><em>recent</em><em> </em><em>utility</em><em> </em><em>to</em><em> </em><em>determine</em><em> </em><em>the</em><em> </em><em>origin</em><em> </em><em>of</em><em> </em><em>an</em><em> </em><em>organism</em><em> </em><em>and</em><em> </em><em>it's</em><em> </em><em>powers</em><em> </em><em>compared</em><em> </em><em>to</em><em> </em><em>it't</em><em> </em><em>weaknesses</em><em>.</em>
<em>Nowadays</em><em>,</em><em> </em><em>it</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>primary</em><em> </em><em>tool</em><em>:</em>
<em>Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses. DNA and ribonucleic acid are nucleic acids. </em>
