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What are the problems that vertebrates required to solve to adapt to the terrestrial environment as they came from the aquatic habitat? How evolution does solve those problems?
The main problems vertebrates coming from water needed to solve to adapt to the terrestrial environment were the following: the difficulty to avoid dehydration; the problem of elimination of wastes in a medium where water is fewer available; the problem of protection against nocent solar radiation; the problem of gamete locomotion in the environment for fecundation; the problem of gas exchange, earlier completed by direct contact of water with gills; the problem of body support, as it was water that played this role in fishes.
What is the difference among living and non-living things? Living things obtain and use energy. They also grow throughout their lifetime. Living this is made of cells. Living t
Discuss important factor of obesity Weight is a most important factor for identifying obesity. Weight is measured in kilograms (kg). It is measured during the first visit and n
Q. What is the cost-benefit relationship regarding sewage treatment as a strategy to fight water pollution? To treat sewage is greatly cheaper for society. The non-treated sewa
What are the grasslands of North America and of South America respectively called? The steppe the grasslands of North America are called as prairies . The grasslands of South
The presence of advanced plaques of types IV and Va allows clinical symptoms to develop. Atherosclerosis is a biphasic disease; in the first stage, advanced plaques are generated b
Explain the differance between Pinocytosis and Phagocytosis? Pinocytosis and Phagocytosis : The cell membrane occasionally invaginates or indents to capture extracellular flu
What is nervous system
Demonstration of Diversity of Plant and Animal - Taxonomy A third objective is the demonstration of tremendous diversity of the plant and animal world and its relation to man's
Hi. I would like to know the type of instrument used to analyse the nerve system and how it functions.
before stem cuttings are planted the cut end of the stem is often dipped in a hormone powder .what is the point of this?
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