Adaptation because organisms adapt to avoid extinction.
In order of importance, the world's four most important crop species are: CORN, WHEAT, RICE AND POTATOES.
Corn is the most produced grain in the world and it is used as raw material for production of different types of food. Wheat is the leading source of vegetable protein in the world, it is usually grown in dry and cold climates.
Answer:
1 - Malaria
2- Typhoid fever and Tuberculosis
Explanation:
In case of malaria, the causal microorganism is Plasmodium falciparum, which target red blood cells of host. In humans who have defective sickle cell allele, have abnomral shaped red blood cells. So microorganism does not able to attach to abnormal shaped RBCs thus humans having sickle cell allele are more resistant to death caused by malaria.
In cystic fibrosis, mutation on that gene which encodes a protein known as cystic fibrosis transmembrane conductance regulator (CFTR).
Normally Salmonella typhi (bacteria responsible for typhoid fever) enters into intestinal cells by attaching with CFTR receptor. Carriers of cystic fibrosis mutant gene, have abnormal CFTR thus reduced rate of entry of bacteria into carriers.
Normally Mycobacterium tuberculosis (bacteria responsible for tuberculosis) adds sulfate in its cell walls. In carriers of cystic fibrosis, arylsulfatase B activity is reduced which incorporates sulfate. Thus reduced arylsulfatase activity makes bacteria unable to add sulfate in its cell walls thus decreases their virulence to carriers of cystic fibrosis.
<h2>Option (D) is Right Answer</h2>
Explanation:
(d) High blood pressure
- <em>Lemon is one the best remedies for hypertension</em>. It is known to make the veins delicate and adaptable, bringing down circulatory strain level
- <em>Lemon juice</em> is known to bring down the <em>triglyceride </em>level and is in this manner advantageous for people experiencing <em>hypertension</em>
- Lemon juice likewise brings down cholesterol
- Basic factors that can prompt <em>hypertension </em>include such as An eating regimen <em>high in salt, fat, as well as cholesterol</em>
- <em>Ceaseless conditions, for example, kidney and hormone issues, diabetes, and high cholesterol</em>
