Fossils
Vestigial structures
Homologous structures
Molecular evidence
Comparative embryology
-------------------------------------
Enjoy
What elements are always present in protein?
A. radium, boron, fluorine, and chlorine
B. mercury, iron, lead, and aluminum
C. carbon, hydrogen, oxygen, and nitrogen ( ✔ )
D. neon, argon, krypton, and copper
<h2><u>Explanation</u> : </h2>
Proteins are one of the primary constituents of living matter. They consist of long chains of amino acids, which are bonded together by peptide linkages and thus called polypeptides. There are about 20 amino acids, and the atoms most prevalent in these are carbon, hydrogen, oxygen, nitrogen, and sulphur.
Answer:
3. would be 4 (Warm Moist Air)
4. would be 1 (Cold Dry Air)
5. would be 3 (Warm Dry Air)
6. Colorado, Kansas, Texas, Oklahoma, nebraska, Iowa, Minnesota, and south Dakota.
7. cold and hot air coming together and then form a tornado.
8. it is called tornado alley because that is where more than half of the tornados happen.
9. it is difficult to predict tornadoes because you dont know when the cold and hot air will collide. it could happen at any time.
Hope this helps!!!
The theory of plate tectonics states that the Earth's solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle.