Answer:
B
Explanation:
Methane is one of the green house gases, and a very powerful one. It is even more potent at influencing global temperature than the most famous green house gases, CO2. Methane's chemical structure is in a way that gives it the ability to trap heat.
This means that an increased release of methane gas into the atmosphere, which is mostly done when cattles defeacates or passes gas, can drastically influence the warming on Earth.
Answer/Explanation:
Green plants can synthesise their own food by using light energy from the sun to convert carbon dioxide and water into glucose, with the release of oxygen. This process is called photosynthesis, and it occurs in specialized organelles called chloroplasts. The first stages of photosynthesis require light energy, and are often called the light-dependent reactions. The next stages occur in the absence of light energy, called the light-independent reactions.
In the light-dependent reactions, chlorophyll in the chloroplasts absorb light, converting into stored chemical energy in the form of NADPH and ATP. The high energy electron produced by light absorption travels down an electron transport chain, driving the pumping of hydrogen ions and creating a gradient. This provides the energy to produce ATP by ATP synthase
This process is used to provide for the light-independent reactions to form carbohydrates from carbon dioxide during a process called the Calvin cycle. The carbohydrates produced during photosynthesis are broken down during cellular respiration to generate ATP.
Ans.
Tuberculosis (TB) is a bacterial infection that affects mainly respiratory tract and can be transmitted from one to another person through contaminated air. The causative agent of tuberculosis, <em>Mycobacterium tuberculosis</em> has developed resistance against many antibiotics, such as rifampin and isoniazid, which is known as tuberculosis drug resistance.
If a person infected with TB shows drug resistance against some TB drugs, 'doctors should give other TB drugs to that person, even if these drugs show less effect than common drugs'. This is because these drugs can prevent or kill the bacterium more effectively than the common drugs for which, bacterium is resistance.
<span>The cartilaginous rings in the trachea and the costal cartilage connects the ribs to the sternum. The same cartilage type is also found in articulating joints. The purpose of the specific cartilage is to give a smooth surface that connects and ends at the articulating bones.</span>
