Answer:
the correct answer is true
Explanation:
on edge 2020
Approximately 90 naturally occurring elements have been found in nature.
Elements are the fundamental building blocks of matter, and they cannot be broken down into simpler substances by chemical means. As of my knowledge cutoff in September 2021, there are 118 known elements in total, with 94 of them being naturally occurring or stable elements. Out of these naturally occurring elements, some are relatively abundant in the Earth's crust and are essential for life, while others are rare and occur in trace amounts.
The most abundant elements in the Earth's crust are oxygen, silicon, aluminum, iron, calcium, sodium, potassium, and magnesium. These elements make up the vast majority of the minerals and rocks that form the Earth's surface.
Some elements, like carbon, hydrogen, nitrogen, and oxygen, are essential for life and are the building blocks of organic compounds, such as carbohydrates, proteins, lipids, and nucleic acids. These elements play a crucial role in the biochemistry of all living organisms.
On the other hand, there are elements that are extremely rare and occur in trace amounts, such as gold, platinum, and iridium. These elements have unique properties and are often valued for their scarcity and various industrial applications.
Elements can be found naturally in various forms, including minerals, ores, gases, and dissolved in water bodies. The study of elements and their properties is central to chemistry, physics, geology, and many other scientific disciplines, as it helps us understand the composition of the Earth, the universe, and the chemical processes that govern our world.
To learn more about elements, here
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called :
A-diagnostic genetic testing
B- amniocentesis
C- carrier genetic testing
D- preimplantation genetic testing
Answer:
Option A
Explanation:
Complete question is
A client with a digoxin level of 2.4 ng/ml has a heart rate of 39. The health care provider prescribes atropine sulfate. Which of the following best describes the intended action of atropine for this client?
Select one:
a. To accelerate the heart rate by interfering with vagal impulses.
b. To reduce peristalsis and urinary bladder tone.
c. To dry oral and tracheobronchial secretions.
d. To stimulate the SA node and sympathetic fibers to increase the rate.
Solution -
Atropine improves the performance and output of cardiac system by inhibiting the action of vagal or parasympathetic. The rate of discharge from the sinus node (SN) increases and hence the chances of ventricular ectopy reduces.
This drug must be administered rapidly to prevent reflexes of bradycardia. The common dosage regime is 0.5 mg per 3 minutes in adults or as per the instructions of doctor.
Hence, option A is correct
The options attached to the above question are given below:
A) The boys at first were very polite about my medals and asked me what I had done to get them.
B) I showed them the papers which were written in very beautiful language of full of fratellanza and abnegazione but which really said with the adjectives removed that I had been given the medals because I was an American.
C) after that their manner change a little toward me although I was their friend against Outsiders
D) I was afraid but I was never really one of them after they had read the citation because it had been different with them and they had done very different things to get their medals.
E) I had been wounded it was true but we all knew being wounded after all was really an accident.
ANSWER
The correct option is D.
In the statement given in option D, it can be seen that the speaker was formerly a soldier, who had fought in a war and had been awarded a medal to that effect. But despite knowing about this meritorious service that he had rendered to his country and the award he was given, he was not really accepted as an inner person by the group of people that was refereed to in the statement. They did not think much of him.
b. They were unintentionally introduced to the Great Lakes by humans.
c. Zebra mussels have caused a great deal of environmental damage to the area.
d. People of the Great Lake region are benefitting from the economic advantages of having zebra mussels in the region.
Answer:
The answer is D
Explanation:
I just took the test
Answer:
in photosynthesis process, the plant have the ability to absorb the light using their pigment called as chlorophyll. this light energy with the help of many enzymes will help the conversion of CO2 and water in to glucose which is then transported to different parts of the plants for its usage in different cellular processes and growth. The excess of glucose which is not utilized and metabolized immediately is converted to complex sugar molecules and stored in the plant in the form of Starch to fulfill the future needs.
Explanation: