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Rashid [163]
2 years ago
10

Runoff that contains fertilizers can cause increased levels of nitrogen in the ocean. What is a possible result of these increas

ed nitrogen levels that may have harmful effects that can disrupt the diversity of ocean ecosystems?
Biology
1 answer:
Masteriza [31]2 years ago
7 0

Answer:

Explanation:

Increased nitrogen level in ocean water can lead to excessive growth of aquatic plants in the ocean which in turn leads to high oxygen (dissolved oxygen) uptake by these plants when they decompose. The overgrowth of these plants also prevent light penetration in the ocean water. All these can affect other aquatic organisms particularly those that depend on these dissolved oxygen and/or light penetration (such as fish and crustaceans).

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Examine the picture below. What is structure "G"?
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Answer:

<u>Structure G</u> is Option (c) : Vacuole

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3 years ago
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19. Explain the following observation made by Gregory Mendel in his experiments, A cross between a
Elis [28]

Answer:

The correct answer is - can be explained by the law of dominance.

Explanation:

In this experiment of Gregory John Mendel where he made a cross between a purebred tall plant and a purebred dwarf plant and in the first generation all the offspring were tall.

It can be explained by that every offspring get one allele from both parents and in purebred both alleles are either dominant or recessive and both parent plant gives one allele which makes a heterozygous condition in which the dominant allele masks the recessive allele and offspring express phenotype of the dominant parent.

4 0
3 years ago
Describe the relationship between proteins and nucleic acid
Dmitry [639]

Answer:

Explanation:

Proteins and Nucleic Acids are not similar in structure. They look nothing alike, either as large molecules or in terms of their building blocks. While they're both made up of mostly carbon, hydrogen, nitrogen, and oxygen, the elements are assembled in vastly different ways. The major relationship between the two has to do with protein production -- DNA contains the information that a cell uses, with the help of RNA, to make protein.

6 0
2 years ago
A field of corn contains a certain amount of food energy. Compare the following situations and then answer the questions. Use th
trasher [3.6K]

Before assessing the two given cases, an assumption needs to be made about the digestion of the two types of food items, corn and beef. Let us assume that both get digested by expending same amount of energy by the human body. Let the amount of energy at producer level be an arbitrary X.

Case 1: Corn to human:

Since corn is at the producer level, it will have X amount of energy. The transfer of energy from corn to human will take place with a loss of 90% energy at the producer level. Hence the humans will receive 10% of X amount of energy.

Case 2: Corn to cow to human:

Since corn has X amount of energy, only 10% will pass to the next level, i.e. cow. So cow has 10% of X. Cow transfers only 10% of the energy that it has. Hence humans receive only 10% of 10% of X amount of energy.

It can be seen that humans receive more energy in case 1 than case 2. Hence we can say that it is more efficient for humans to feed on corn.

3 0
3 years ago
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Briefly explain what clues to look for to tell if a cell is in each of the following phases of mitosis:
k0ka [10]

Answer:prophase----the chromosomes shorten and thicken.the nuclear membrane has open up and the nucleolus has disappeared

Metaphase----the chromosomes migrate to the central plane of the cell and attach to the spindle fibres microtubules

Anaphase---the chromatids of each chromosomes part and move towards opposite poles of the spindle as the spindle fibres shorten

Telophase----the chromatids are in the polar end of the spindle .the spindle breaks down,the centrioles replicate,the nuclear membrane is reformed,the chromosomes gradually uncoil.

Explanation:

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