Answer:
Polycythemia Vera
Explanation:
Polycythemia Vera can be described or known to be a type of blood cancer. And its effect is that, it makes the bone marrow to make or produce too many red blood cells, which can thicken the blood, slowing its flow, and can cause serious problems, such as blood clots, strokes, weakness among others.
Some of the symptoms of Polycythemia vera are
* Headaches, dizziness, and weakness.
* Shortness of breath and problems breathing while lying down.
* Feelings of pressure or fullness on the left side of the abdomen due to an enlarged spleen (an organ in the abdomen)
* Double or blurred vision and blind spots.
In conclusion, it should be understood that there is no cure for polycythemia vera. And treatment only focuses on reducing the risk of complications.
Ecotones are the<u> transitional zones between two ecosystem.</u>
Explanation:
Ecotones is a narrow zone between two different ecosystem.
It may be defined as the transition zone between these two ecosystem. Ecotones are species rich and it's resources are used by inhabitants of both the ecosystem.
Ecotones are marked by sharp changes in vegetation and species population.
The ecotones arise due the drastic changes in the environmental condition of a place that creates a sharp boundary between it and adjacent area.
However, these changes blend somewhere in between these area and results in formation of ecotones.
Example of ecotones can be the mangroves. These lie between marine ecosystem and terrestrial ecosystem.
Answer:
Multicellular organisms depend on mitosis for growth and repair. When an animal, plant or other multicellular organism grows, it makes more cells through mitosis. Organisms can repair some of their tissues, using mitosis to regenerate new cells.
Explanation:
Gonadotropin releasing hormones causes the ovaries and testes to greatly increase their production of estradiol and testosterone.
Gonadotropin releasing hormone is a hormone is released from nerve cells in the brain or produced in hypothalamus and transported to the pituitary gland through the blood stream. These hormones are very important in fertility.