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3 years ago

Infectious disease can be spread by which of the following

2 answers:

3 0

D) All the Above.

There are diseases that are carried from one person to another by sharing the same food, water and body fluids. If an infected person shares food with a non infected person the germs and bacteria that are present on his hands will carry the disease. There are several diseases that are water borne. These are spread through poor sewage systems or the water droplets in the air in which an infected person breathes. Body fluids can be the mucus from the nose of the flu, the spit of an infected person or sexual discharge that can cause STDs to a non infected person.

barxatty [35]3 years ago

3 0

D, food (salmonella) water (cholera) body fluid (stds)

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A certain cultivated herb is one of a group of closely related plants that thrive in soil with high concentrations of metals tha

notsponge [240]

Answer: the correct answer is (B) Whether others of the closely related group of plants also produce histidine in large quantities

Explanation:

This is a CAUSAL argument.

In a causal argument, A and B are observed together, and the CR concludes that A CAUSES B.

Premise = A and B are observed together:

A cultivated herb produces histidine and is able to grow in metal rich soils.

Conclusion = A causes B:

Histidine CAUSES the herb to be able to grow in metal rich soils.

One way to strengthen the conclusion that A causes B is give ANOTHER SUPPORTING EXAMPLE that links A to B.

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2 years ago

Ailani age 3 is lactose intolerant and unable to drink milk or to eat dairy products. what nutrients is most likely deficient in

svetlana [45]

Calcium. Almonds, broccoli, oranges, kale

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3 years ago

Read 2 more answers

|3x - 2) =12<br> I need the answer

Alecsey [184]

The answer is 3(x-2)(x+2)

7 0

3 years ago

Which best describes the nucleus of an atom?

Maru [420]

Answer;

C. it is the part f the atom with the greatest mass

Explanation;

The nucleus of an atom is a small dense region at the center of an atom that contains protons and neutrons.

Almost all the mass of an atom is located in the nucleus, with a very small contribution from the electron shells.

The protons are positively charged which gives the nucleus a positive charge while the neutrons have no charge.

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3 years ago

Read 2 more answers

In a population of plants, the allele for long stems (S) is completely dominant over the allele for short stems (s). If 35% of t

Sergio [31]

Answer:

The correct answer would be 48 percent.

It can be solved by using the Hardy-Weinberg equation.

p² + 2pq+ q² = 1

p + q = 1

where, p² represents homozygous dominant's frequency that is, SS in this case,

q² represents homozygous recessive's frequency that is, ss in this case,

2pq represents heterozygous dominant's frequency that is, Ss in this case.

p represents dominant allele's frequency and q represents the recessive allele's frequency.

Now, the percentage of homozygous recessive or short stems is 35%. Therefore, the frequency of homozygous recessive would be 0.35.

Thus, the value of q² = 0.35

So, q = $\sqrt{0.35}$ = 0.59 which is approximately equals to 0.6.

As p + q = 1 so, q = 1 - 0.6 = 0.4

The frequency of heterozygous (Ss) = 2pq = 2(0.6)(0.4) = 0.48

Hence, the frequency of heterozygous would be 48 percent.

8 0

3 years ago