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d1i1m1o1n [39]
3 years ago
15

After three years of heavy rain, a field of soybeans shows a decreased yield. They have weaker root systems compared to plants i

n fields where water has been regulated. A fungal pathogen is also found growing in the soggy fields. What hypothesis best explains this phenomenon?
Biology
1 answer:
Troyanec [42]3 years ago
5 0

Answer:

It can be hypothesized that fungal pathogen is responsible for decreased yield.

Explanation:

As the extensive heavy rain changed the climate of that area the soybean plant was effected by pathogenic fungus grown in the field. As we know that fungi makes spores that can withstand harsh environment. Humid and moist environment is favorable for fungi growth. So when spores find a suitable environment they grow rapidly. In the given example, the fungi was pathogenic that produced toxic compounds and effected the growth of soybean plant by damaging its root system and water supply to plant.

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Black coffee has a pH around 5; hand soap has a pH of 10. How many times more acidic is coffee relative
Anon25 [30]

Answer:

\boxed {\boxed {\sf 10^5 \ or \ 100,000 \ times \ more \ acidic}}

Explanation:

The pH scale stands for the power or potential of hydrogen. It measures how acidic or basic a solution based on the concentration of hydrogen ions and a scale from 1 to 14.

This scale is unique because it is logarithmic. So, every time the pH changes by 1 on the scale, the actual concentration of the solution increases or decreases by a tenfold.

So, a solution with a pH of 7 is ten times more acidic than a solution with a pH of 8. This can be translated to:

10^ {difference \ in \ pH}

The black coffee has a pH of 5 and the hand soap has a pH of 10. We want to find how many times more acidic coffee is, so we subtract 5 from 10 and get 5. The difference in pH is 5.

10^5=100,000

Coffee is <u>10⁵ or 100,000 times more acidic than hand soap.</u>

3 0
2 years ago
Use the information gathered in the Epistasis animation to answer the question. Although both dominance and epistasis involve ma
Dafna11 [192]

Dominance involves one allele masking another at the same locus whereas epistasis involves one locus masking a different locus.

Explanation:

Epistasis is a type of gene interaction in which one gene masks or modifies the expression of another gene at a distinct locus.

Dominance refers to the gene interaction in which one allele of a given gene masks the expression of another alllele of same gene.

The comparison of dominance and epistasis give the following  information:

  • Dominance  involves  allelic suppression while epistasis involves non-allelic suppression.
  • Dominance involves a single pair of alleles while epistasis involves two pairs of allele.
  • In dominance, the expression of recessive allele is suppressed while in epistasis, either recessive or dominant  non allele is suppressed.
  • The effect of dominance is due to the dominant allele while epistasis may be due to dominant or recessive allele.

8 0
3 years ago
Mendel studied pea plants for particular traits. When observing the results of his experiments, he created two laws of inheritan
cluponka [151]
<span>A scientific law describes repeated observations under a given set of conditions. These laws are not too specific, and they imply a casual relationship. These laws do not explain why something occurs, they merely state that something will occur if the given conditions are met. Therefore, the formation of a scientific law is a result of repeated observations. An example is Newton's first law of motion, which gives certain conditions for an object, such as no force acting on it, and then describes what the object will do in that situation, that is, remain in motion or remain stationary.</span>
6 0
3 years ago
Read 2 more answers
You observe a cell in a stained section of connective tissue. The cell has an indented nucleus and obvious cytoplasmic granules.
defon
You observe a cell in a stained section of connective tissue. The cell has an indented nucleus and obvious cytoplasmic granules. Upon further testing, you determine that the granules contain histamine. This cell is most likely a(n) _____.

mast cell
3 0
3 years ago
The respiratory system supplies oxygen to the blood in the body, while removing carbon dioxide. Which system directly interacts
Olegator [25]

Answer:

The correct option is <u>C. The nervous system when the brain regulates the body's breathing and heart rate.</u>

Explanation:

The main function of the respiratory system is to exchange oxygen for carbon dioxide in the body.

The brain controls the rate at which the heart pumps blood. The pumping of the heart supplies oxygenated blood to other parts of the body. Hence, the rate at which heart pumps blood is very important to maintain homeostasis of the respiratory system.

The brain regulates the rate at which a person breathes. This rate is very important to breathe in the right amount of oxygen and to breathe out the right amount of carbon dioxide.

8 0
3 years ago
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