Answer:
Calving difficulty, technically called dystocia, is a major cause of death loss in cow-calf herds.
Explanation:
did research
Minerals may be defined as the combination of two or more elements of a substance.
<u>Five criteria that exhibits a particle to be minerals; </u>
- They are natural and not man-made.
- Inorganic i.e. not made by any organism.
- Minerals are solids, not liquid or gas.
- They have a definite chemical structure.
- The atoms in minerals are arranged systematically and are arranged in a repeated pattern.
Minerals are natural and we use it in our day to day life. Products like salt and even a pencil have minerals. Also, these minerals help the parts in the human body to grow faster and function properly.
Answer:
<em>Trichomonas vaginalis</em>
Explanation:
<em>Trichomonas vaginalis</em> is a protozoan parasite that causes Trichomonasis.This STD caused by this one-cell organism, is one of the most common infections transmitted sexually.It usually affects the genitourinary tract of both males and females.
Most males who are infected by this parasite hardly know they are being infected by it. Men are typically asymptomatic. But symptoms such as enlarged prostate gland, urethritis, or epididymitis often present themselves later in males.
Answer: The correct statements are 1 and 2:
1.Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant.
2.Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.
Explanation:
Pollination is the transfer of pollen grains from an anthers to a receptive stigma. In most species of flowering plants, external agents bring about pollination. Also, flowers have evolved special structures and mechanisms to ensure successful pollination.
There are two types of pollination
--> Self pollination: This takes place when mature pollen grains from the anther of a flower fall on the stigma of the same flower or that of another flower on the same plant. This type of pollination brings the male gametes and egg cells of the same plant together. The resultant offspring show very little genetic variation.
--> Cross pollination: This occurs when mature pollen grains of a flower are transferred to the stigma of a flower of another plant of the same or closely related species. This brings the male gametes and egg cells of two different parent plants together. Therefore, there is greater genetic variation among the offspring.
<h2>
Hey There!</h2><h2>
_____________________________________</h2><h2>
Answer:</h2><h2>_____________________________________</h2>
Active Immunity, Immunity which is acquired by the own immune response of the body.
Passive Immunity, Immunity which is acquired and dependent upon the antibodies transported from another person or even an animal. A person's immune system does not acquire or make the antibodies itself. A newborn baby acquires passive immunity from its mother through the placenta.
x---------------------------------------------------x
<h2>
</h2><h2>
</h2>
Vaccination is a artificial active immunity. Artificial because the antibodies are not acquired by any natural infection but it is injected into the healthy body of the person. It is Active immunity because the body does not get already made (from other animal) antibodies but it acts on the small amount of the pathogen which is injected in the body and acquires the antibodies itself. So the person acquires antibodies naturally acting on the antigen. Antigen is any foreign agent which triggers the immune system to produce antibodies against it. Vaccines contains antigen which is a harmless form of the bacteria or a virus that causes the disease you are being immunised against. The bacteria or virus are in small proportion and greatly weakened in the vaccine so they just trigger an immune response without causing any real damage. When Vaccine is injected in the body, the immune system starts to make antibodies of different forms against the antigen(Virus or bacteria in the vaccine). When the appropriate shape antibody reacts with the antigen and forms antibody-antigen complex which destroys the antigen. This means that type and shape of antibody is perfect to work against that antigen, then the immune system start forming only those kind of antibodies in great proportion and the Person gets immunised by the vaccine in a natural way.
<h2>_____________________________________</h2><h2>Best Regards,</h2><h2>'Borz'</h2><h2 />
