Answer:
The Motor Vehicle Air Pollution Control Act was proposed by an amendment to the clean air act.
Explanation:
The clean air act was started in 1963 by the government of the U.S in order to contamination of the air.
The Motor Vehicle Air Pollution Control Act was amended in 1965, which gave the government rights to set standards against pollution that arose from certain kinds of vehicles.
Second amendment to this Act gave the federal government to take further actions and stop any vehicle that polluted the air.
Answer:
The correct answer is A) Respiratory System
Explanation:
The Respiratory System has is concerned with the lungs, the process of breathing, etc. The lung is also one of the main organs in the Respiratory System. If your lungs are filled with fluid or infected, your body will have issues getting the air it needs.
Red blood cells. Red blood cells (also known as erythrocytes) are cells in the blood that carry oxygen to all parts of the body. They are made in the spongy marrow inside the large bones of the body. Bone marrow constantly makes new red blood cells to replace old ones.
. In vertebrates, it is composed of blood cells suspended in blood plasma. Plasma, which constitutes 55% of blood fluid, is mostly water, and contains proteins, glucose, mineral ions, hormones, carbon dioxide, and blood cells themselves. Albumin is the main protein in plasma, and it functions to regulate the colloidal osmotic pressure of blood. The blood cells are mainly red blood cells, white blood cells and platelets. The most abundant cells in vertebrate blood are red blood cells. These contain hemoglobin, an iron-containing protein, which facilitates oxygen transport by reversibly binding to this respiratory gas and greatly increasing its solubility in blood. In contrast, carbon dioxide is mostly transported extracellularly as bicarbonate ion transported in plasma.
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A substance that speeds up a chemical reaction—without being a reactant—is called a catalyst. The catalysts for biochemical reactions that happen in living organisms are called enzymes. Enzymes are usually proteins, though some ribonucleic acid (RNA) molecules act as enzymes too.
Enzymes perform the critical task of lowering a reaction's activation energy—that is, the amount of energy that must be put in for the reaction to begin. Enzymes work by binding to reactant molecules and holding them in such a way that the chemical bond-breaking and bond-forming processes take place more readily.
Answer:
Cell is a system where each part of it performs a specific job. For every function, there is a structure present called organelle. Some organelle are responsible for the production of energy and proteins for the cell.
Some organelle is responsible for the excretion of waste material and some do the job of storage house.
When many cells combine together, tissue formed and when tissues group together form an organ and when different organs work together they form an organ system. So we can say that cell is a system.
