There is direct relationship of yolks size to the development rate of the organism inside the egg because large size of yolk leads to the more speed of development rate.
What role does the yolk play in chick development?The main font of nutrients for chicken embryo development is the yolk, which gives more than 90% of the nutrients and is dynamically consumed to supply essential elements for embryonic organ growth and tissue emergence. The yolk is the source of food for the embryo and takes all the fat in the egg. The small white spot on the yolk is called the germinal disc. The chicken yolk sac tissue supplies the functions of the intestine, liver, bone marrow, and thyroid, while the organs of the embryo evolve and mature.
So we can conclude that the yolk sac supplies food material to the embryo. The amnion, by enclosing the embryo provides protection.
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how does the second law of thermodynamics help explain the diffusion of a substance across a membrane?
The second law is the trend toward randomization, or increasing entropy.
Second law allows for diffusion because diffusion is an increase in entropy .Diffusion is the process of movement of molecule down the concentration gradient until they doesn't exist . This movement represents an increase in the entropy.
Second Law of Thermodynamics state that molecules will spontaneously move towards an area of lower concentration, from an area of higher concentration. Molecule are capable to travel across cell membranes known as lipophilic molecules as they dissolve in the lipid bilayer. Movement represents an increase in the entropy or disorder in the system .
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diseases of the blood or bone marrow are referred to as: group of answer choices morphologies. dyscrasias. lymphadenopathies. hematology.
Diseases of the blood or bone marrow are referred dyscrasias.
What is dyscrasia?
Dyscrasias is an imprecise term that doctors often use to refer to blood-related medical conditions or disorders. These cellular disorders affect plasma or blood components, lymphatic tissue, and bone marrow. Examples of blood dyscrasias are aplastic anemia and cancer, including lymphoma and leukemia.
Aplastic anemia is a type of blood disorder caused by the failure of the bone marrow to produce blood cells. The cause of aplastic anemia that occurs in you can be caused by a viral infection. It can attack the bone marrow in a person, causing the development of aplastic anemia.
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You have been contacted by a government official, who is looking to spend 5 million USD of overseas aid funding to benefit human welfare by protecting an ecosystem. They wish to use the money to protect and or / restore an area of land (or sea), in collaboration with local communities. They would like your help to decide which ecosystem type (suggestions listed below) would lead to the greatest benefit in terms of human health, equality and wellbeing.
Your task is to write a persuasive letter, arguing for the benefits of your chosen ecosystem. The official will be best convinced by:
An ecosystem services approach, using correct terminology
Clear evidence based (rather than emotional / value based) arguments
Clearly demonstrated correct scientific understanding (e.g. of the carbon cycle)
Specific studies, giving measured estimates of ecosystem services in particular locations (e.g. specific quantities of carbon stored or water purified, for example) - correctly cited
Ecosystems that store large quantities of carbon, since climate change mitigation is a priority.
Solutions that benefit disadvantaged communities (economically disadvantaged or excluded from decision making processes)
Reliable sources, carefully selected and evaluated
Once they have read and considered all your arguments, they will choose to use the funding to enhance protection or restoration of one type of ecosystem.
The coastal region is chosen to be remediated by the government's incentive, because the mangrove vegetation, mainly its root system, is capable of reducing the impact of sea water on coastal regions, protecting coastal cities against the effects of tidal erosion , storms, sea level rise, and even tsunamis.
The mangrove and its biodiversity: why preserve it?Thinking about the preservation of the forests, we decided to develop our project highlighting the riparian forests, specifically the mangrove. The mangrove is an ecosystem that develops in tropical regions, where fresh and salt water meet, thus forming brackish water. The mangroves are made up of three types of trees — they are: the red mangrove, the white mangrove and the black mangrove — and can therefore be considered a forest.
In it we will find animals that serve as food and sustenance for many people, and the preservation of its fauna and flora is of great importance for the sustainability of this forest and the individuals who need it.
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