How much blood can you lose before you need a transfusion.

Answer:

Red cell transfusion is usually necessary if 30–40% blood volume is lost, and rapid loss of >40% is immediately life threatening...

Explanation:

Not sure about this answer...I just read about it in a book...Sorry if the answer is wrong

What is being measured when counting the calories burned when resting?​

Kerry bought a new kettle which was described as being pink on the outside of the box. However, when Kerry opened the box the kettle was actually blue in colour. Does Kerry have any rights as a consumer?​

A condition that affects the urinary system and can be fatal is
А. a stomach ulcer
B. kidney failure
C. irritable bowel syndrome
D. lactose intolerance
Please select the best answer from the choices provided.

Chronic inflammatory skin disease characterized by chronic redness that
are covered with scales.
O a) Acne vulgaris
O b) Athlete's foot
O c) Psoriasis
O d) Herpes
O e) Basal cell Carcinoma
O f) Rosacea
O g) Shingles (herpes Zoster)
O h) Warts
O i) Boils

Which statements are myths about nicotine and tobacco use? Check all that apply.

Raquel recently received a poor grade on a school assignment. Her mother has noticed that Raquel is staying up late at night. Raquel is revising her homework several times and studying constantly. She has been eating very little and has complained of stomach trouble.

Which sign suggests that Raquel might benefit from professional mental health services?

losing her appetite
studying constantly
receiving a poor grade
feeling sad about her poor grade

Morphine, opium, codeine, and heroin belong in which category of drugs?.

Never remove cloth when applying direct pressure,just keep adding more A.True B.False​

In 1965, Medicare and Medicaid were established as federally funded programs to provide:___.
A. Healthcare care access to the homeless.
B. Healthcare access to the mentally ill.
C. Healthcare access to military personnel and veterans and their dependents.
D. Health care access to the elderly and the poor respectively.

The mesenteric lymphatic system is a major anatomic pathway for metastasis of which type of primary tumor?.

What is Social and cultural Norms?

Are the physical effects of stress always harmful? Why or why not?
will give a brainlist plus 20 points

A young professor who just received her PhD, and who happens to look much younger than her actual age, goes into her first lecture at her new job assuming that everyone would doubt her authority or expertise. Because of this, she feels even more pressure to really excel. The apprehension she feels is an example of the concept of_____threat.

Please someone help me!

This drawing shows a human body system.

What is the primary function of this body system?

Which scenario involves bullying?
A.
Nicole kicks her teammate during soccer practice while attempting to kick the ball.
B.
Amir feels excluded from his group of friends because he dislikes video games.
C.
Ella is upset because a girl from her class refused her friend request on social media.
D.
Ivan hears a group of boys snickering because he missed the winning field goal.

list three social or enrivonmental factors that protect people against the negative effects of the Zika virus.
​

Select the correct answer. Which step of the PRICES method is represented by the letter S?

A. Raise the injured area above the heart.

B. Stop the activity until the injury is
evaluated.

C. Wrap the injured site to decrease swelling.

D. Apply a brace or a splint to the area. ​

A friend told you that they have been thinking about hurting themself, but made you say you wouldn’t tell anyone. Why is it important to tell a trusted adult anyway?

Directions:



Answer the questions based on the information provided on the food label below.



Susie has purchased a box of crackers and has consumed 2 servings. Then she read the food label.





Question #1
How many servings are in this package?


Question #2
How many calories per serving and how many total calories has Susie already consumed?


Question #3
How many grams of carbohydrates has Susie already consumed?


Question #4
How many grams of protein has Susie already consumed?


Question #5
What vitamin or mineral has the largest daily percentage per serving?


Question #6
How much sodium (salt) is contained in this food?


Question #7
In one serving, how many calories are from protein?


Question #8
How many calories from fat has Susie already consumed?


Question #9
The percent daily values on a food label are based on how many calories?


Question #10
If Susie continued to eat this food until it was completely gone, how many total calories would she consume?

Which is the correct order in which brain changes occur that lead to alcoholism?
a. tolerance, addiction, dependence
b. tolerance, dependence, addiction
c. reverse tolerance, addiction, dependence
d. tolerance, reverse tolerance, dependence

Which is NOT one of the three fiber groups
A. Natural Fiber
B. Dry Fiber
C. Synthetic Fiber
D. Protein Fiber

Is it normal to hear high-pitched noise in silence?.

Which statement, if a woman exercises 25 minutes each day, according to physical activity recommendations, is true?

A) She is exercising enough

B)She is exercising too much

C)She is exercising too little

what types of physical care must a parent provide for an infant child?

When the doctor examines 9-month-old Ben, he realizes that Ben’s left testis has not moved into its proper position in the scrotum. He recommends a surgical procedure to move the undescended testis into its proper position. Which procedure is the doctor referring to?

Read the section "New Way Of Smoking Is Popular." Which sentence from the section BEST shows how popular Juuls are?Read the section "New Way Of Smoking Is Popular."

The U.S. government is studying e-cigarettes. The government wants to see if e-cigarettes help adult smokers who have smoked for a long time. They might help them stop smoking regular cigarettes. This is partly why e-cigarettes are still being sold. So schools must continue to fight kids using Juuls. Aaron Sicotte is the principal of Needham High School in Massachusetts. He said e-cigarettes started appearing last year. Juul is the most popular kind. School workers have been told about Juuls. Sicotte said sometimes Juuls fall out of students’ bags. Teachers now know what these things are. They do not give them back. Sicotte thinks vaping is here to stay at schools, though. He said, "the draw is too great." In other words, students find it hard to turn down e-cigarettes.

Which sentence from the section BEST shows how popular Juuls are?

A. She talks to students about the dangers of drugs and drinking.
B. She thinks e-cigarettes will be the biggest health problem in the next 10 years.
C. Three to four students are caught with e-cigarettes each week, she said.
D. Her high school has tried to stop students.

Which is the MOST accurate explanation of the obesity epidemic in the United States?
A. More Americans are genetically predisposed to obesity.
B. Obesity can have both genetic and environmental causes.
c. Americans are obese because of their unhealthy diets.
D. The technology available discourages physical activity.

need help with these ​

The respiratory system is responsible for the exchange of oxygen with which gas?.