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.
Wetlands include swamps, marshes, bogs, riverbanks, mangroves, floodplains, rice fields—and anywhere else, according to the U.S. Environmental Protection Agency (EPA), that saturation with water is the dominant factor determining the nature of soil development and the types of plant and animal communities there. They are widespread in every country and on every continent except Antarctica. If all the world’s wetlands were put together, they would take up an area one-third larger than the United States.
Environmentalists, biologists and others concerned about the health of the planet and its inhabitants recognize the key role wetlands play in life on Earth. The EPA points out that, besides containing a disproportionately high number of plant and animal species compared to other land forms, wetlands serve a variety of ecological services including feeding downstream waters, trapping floodwaters, recharging groundwater supplies, removing pollution and providing fish and wildlife habitat. Wetlands can also be key drivers of local economies, given their importance to agriculture, recreation and fishing.
It’s important for growth and development
The cardiovascular system focuses more on pumping blood all throughout the parts of the body which mean the heart, capillaries, veins, and arteries are all involved in this. The Respiratory System is all about the gas exchange that is happening in your body which involves the lungs, oral and nasal cavities.
It is a progressive succession as the simple plants grow into hardwood forest, it will <span>contains more species and biomass over time.</span>