Answer:
organogenesis
Explanation:
Organogenesis is defined as a process in which the three germ layers differentiate further to form several organs.
The embryonic stem cell is responsible for determining the ultimate cell type. During this process, neural system is formed and several morphological changes occur. The neural system further differentiates and develops to form neural tube and ultimately converts into brain and spinal cord. While folds and dense clusters are formed in the embryo that later form organs.
Answer:
Mainly rainfall, temperature and situation.
A contact lens is a lens placed on the cornea of the eye.
Importance of buffers in contact lens products:
Buffers: They aim to keep the pH of the solutions at values between 6.6 and 7.8 in order to maintain the lens parameters and the effectiveness of the solutions. They are made by the combination of an acid and its sodium salt (phosphate and acetate for example). Borate and citrate buffers are used.
Importance of isotonicity in contact lens products:
The solution composed by isotonic saline solution.
Isotonia is expressed by osmolarity or cryoscopic lowering
- 0.236 to 0.446 mOsmoles / l (increases during the day)
- If the osmolarity of the mixture is different from that of the tears, it causes discomfort and irritation
• Increased tear secretion
• Increase the blink frequency
- If hypotonia, entry of water to the epithelial cells, if hypertonia: inverse
- Osmolarity restored 1 or 2 minutes after instillation
While stopping to get gas in The Valley of Ashes, Nick notices the eyes of whom staring down at them? (hint: there are 2 pairs of eyes watching)
Answer:
For example, the Milky Way galaxy is some 100,000 light-years across, and our closest galactic neighbor, Andromeda, is some 2.5 million light-years away. In other words, it takes light 2.5 million years just to travel from our galaxy to the one that is right next to us.
Explanation: Hope this helps if not lemme know
