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notka56 [123]
3 years ago
14

the graph below shows the percent of seeds from two plant species that sprout when grown in water containing different amounts o

f salt
Biology
1 answer:
Akimi4 [234]3 years ago
6 0
What are the answer choices?
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A pharmacist has two vitamin-supplement powders. The first powder is 10% vitamin B1 and 30% vitamin B2. The second is 15% vitami
Basile [38]

Answer:

560 mg of powder 1 and 160 mg of powder 2

Explanation:

Let "X" denotes weight of powder 1 added to the new mixture and  "Y" denotes weight of powder 2 added to the new mixture

Total weight of vitamin B1 in the mixture is equal to 80 mg

Total weight of vitamin B2 in the mixture is equal to 200 mg

Equation 1

0.1 X + 0.15 Y= 80

Equation 2

0.3 X + 0.2 Y= 200

Let us simplify the above two equations, we will get

10 X + 15 Y = 8000\\3X + 2Y = 2000

2 (10 X + 15 Y = 8000), 20X + 30 Y = 1600015(3X + 2Y = 2000), 45X +30Y = 30000\\25 X = 14000\\X = 560

Substituting value of X in equation 2 we get

0.3 * 560 + 0.2 Y = 200\\0.2 Y = 200 - 168\\Y = 160

7 0
4 years ago
Which would result if a person's kidney stopped functioning?
Rzqust [24]
The Kidney would begin to fail
3 0
3 years ago
Read 2 more answers
Describe how changes in an ecosystem can affect organisms that live there..
Shtirlitz [24]
Well it really depends on what kind of change there is. For this I'll use a drought as an example. If a drought occurs in an area the plant life and vegetation will start to die off in that area. From there, primary consumers would run out of food. then secondary consumers, and so forth and so on. it'd be like putting a cow in a field of dirt with no food and a large bucket of water. Eventually the cow will die of starvation. Now apply this to all of the animals in that ecosystem.
3 0
4 years ago
The principal of Dominance states that
jeka94

Principle of Dominance was given by Sir Gregor Johann Mendel.

<h3><u>Explanation:</u></h3>

Principle of Dominance was given by Sir Gregor Johann Mendel as a conclusion of the monohybrid cross between the different characteristic pea plants. It says that in an organism which is heterozygous for a particular character, only the dominant trait is able to express as a phenotype, not the recessive one. In other words, the recessive allele is completely masked by the presence of the dominant allele. This leads to same phenotype of a homozygous dominant organism and a heterozygous organism.

To test the organism about its heterozygosity, the organism is led through a test cross where the organism is crossed with a recessive organism. If the F1 offsprings are all dominant, then the organism is homozygous dominant, and if the F1 offsprings are of half dominant and half recessive phenotype, then the organism is heterozygous.

5 0
3 years ago
All of the following are true of public health professions except:a. Certification based upon core master’s level competencies w
drek231 [11]

Answer:

The correct answer is d. graduate public health degrees require previous graduate credentials such as medicine, nursing, or law

Explanation:

Public health deals with art and science of curing or preventing a disease, improving the quality of living or prolonging the life of an individual.

If you want to pursue your career in public health then you simply should have 12 years of education which includes your primary school and then your college. It does not require any prior graduate credentials like medicine nursing or law. Anyone can pursue this degree, who has interest in it.

Public health is a vast field and includes career like epidemiologist, health educator or relation specialist etc.

7 0
4 years ago
Read 2 more answers
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