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Stels [109]
3 years ago
14

All of the following substances are necessary for the survival of living things except —A.foodB.energyC.heliumD.water

Biology
1 answer:
Viktor [21]3 years ago
4 0

Answer:

helium

Explanation:

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Answer:

hi

Explanation:

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2 years ago
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The nurse is attending to an older patient who cannot tolerate oral medication. the patient is prescribed subcutaneous therapy f
cricket20 [7]
The nurse should first select an area to perform the hyphodermoclysis, outside of the elbow is usual but the back of the hand is fine too. Then the nurse must apply a tourniquet 10 cm before the selected area, so it blocks blood circulation. After feeling the vein stand out in the selected area, said area must be cleaned with an antiseptic solution. Then the nurse should introduce the needle connected to the catheter in the outstanding vein, following along the anatomy of the patient against the normal bloodstream direction, so the needle stays almost parallel to the vein while inserted. Finally the nurse must fix the needle to the arm using medical adhesive, and remove the tourniquet.
5 0
3 years ago
A population of kangaroos is growing at a rate of 2% per year, compounded continuously. If the growth rate continues, how many y
antoniya [11.8K]

Answer:

The correct answer is 20 years.

Explanation:

It is given that the growing rate is 2% or 2/100 = 0.02

This rate got increased to 150%

The formula for exponential growth is:  

A = Pe^rt

Let the initial population be 100%

150 = 100.e^0.02*t

3/2 = e^0.02t

1.5 = e^0.02t

After taking log from both the sides:  

ln(1.5) = 0.02t * ln(e) [ln(e) = 1]

ln(1.5) = 0.02t

t = ln(1.5)/0.02

t = 20.27

Thus, it will take around 20 years for the size of the population to reach 150 percent of its present size on the basis of the exponential growth function.  

7 0
3 years ago
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Which enzyme is responsible for creating the covalent bonds that connect the sugar phosphate backbone of the new DNA molecules?
cupoosta [38]
DNA ligase <span>s responsible for creating the covalent bonds that connect the sugar phosphate backbone of the new DNA molecules</span>
5 0
3 years ago
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In humans, polydactyly (more than 5 fingers and toes on each hand and foot), is inherited in an autosomal dominant manner. What
Masteriza [31]

Answer:

C. More than 5 fingers/toes on each hand/foot

Explanation:

According to the given information, polydactyly is an autosomal dominant trait which means that the phenotype would be expressed in both homozygous dominant and heterozygous dominant genotype.

The given genotype is heterozygous dominant. The individuals with heterozygous dominant genotype would exhibit the polydactyly and would have more than 5 fingers and toes on each hand and foot.

8 0
3 years ago
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