Answer:
C. Concentration gradient
Water has special characteristics because liquid water is denser than ice and ice floats on top of liquid water.
Answer: Option A & D
<u>Explanation:</u>
A water molecule is formed by the covalent bonding between two atoms of Hydrogen atom with one atom of Oxygen. In water, the Hydrogen bonds are the one that keeps the water molecule intact.
When the water molecule freezes the bonding becomes weak as they are separated and set apart which makes the liquid water denser than ice. Normally a substance floats if it is less dense. Ice floats because it is less dense than water.
The nurse should explain the newly diagnosed lung cancer client that the reason why his tumor metastasized so fast without displaying many signs/symptoms is that: the malignant tumors affect area tissues by releasing enzymes and toxins that make the other normal cells to differentiate uncontrollably.
Metastasis is the property of spreading of cancer cells. When the tumor at a location in the body starts spreading top other locations as well, it is said to be metastasizing.
Malignant tumors are those that metastasize. They travel to near or distant locations at the body and start dividing. These are cancerous in nature.
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Answer:
A carbon atom can form four covalent bonds, it also bonds with other carbon atoms to form long-chain molecules of different sizes and shapes.It's electronegativity on Pauling scale is 2.55 due to which when it bonds with elements like oxygen, hydrogen the bond formed is quite strong.
Explanation:
Of the three salivary glands (Sublingual, submandibular and parotid glands), the parotid is the largest. They are all paired. The parotids are located on either side of the mandibular ramus. It produces ptyalin, an alpha-amylase, and is responsible for 20% of the total saliva content produced into the mouth.
