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3 years ago

What are the three mechanisms for Reproductive isolation?

2 answers:

8 0

Three mechanisms are behavioral isolation, geographic isolation, and temporal isolation. Behavior isolation because it includes mating calls and dances to attract mates.

irina1246 [14]3 years ago

3 0

Behavioral isolation, geographic isolation, and temporal isolation. Populations of frogs that have different mating calls are an example of behavioral isolation.Hope this helps.

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Soils contain small or trace amounts of many minerals, including the chemical elements phosphorus, calcium, potassium, magnesium

serg [7]

Answer:

Magnesium, calcium, phosphorous, sulfur these are essential nutrients for plants. These are required in trace quantity but are very important for plant life. Point A. will be correct answer.

Explanation:

As in B. starch n cellulose are composed of only carbon, oxygen and hydrogen.

As in C. These elements are not required on special occasion but are necessary throughout plant life.

As in D. C H N O is the primary component plants need but these secondary nutrients are equally necessary for growth n structure of plant.

So answer A. Is the correct option.

Calcium plays the most important role in structure formation of plants. Also act as messenger molecule in signaling. Deficiency of calcium caused wilting , weakened stem and ultimately death of plant.

Magnesium is the key element in chlorophyll molecule. It is necessary for chlorophyll formation.

Sulfur is another very important element in plant life, it is necessary for protein synthesis in plants.

Phosphorous plays an important role in process of cell devision , photosynthesis and respiration.

Potassium is very crucial in gaseous exchange ,it operates the opening and closing of stomata.

3 0

3 years ago

Which cycle is directly affected by burning fossil fuels? carbon cycle water cycle nitrogen cycle fossil cycle?

Fiesta28 [93]

Coal, oil and natural gas carbon dioxide (CO2)

6 0

3 years ago

Read 2 more answers

A mistake in DNA replication, in which the wrong base is placed in the growing DNA strand, can have profound effects on the desc

Klio2033 [76]

Answer:

DNA replication is the process in which the DNA is copied and it occurs during synthesis phase of the eukaryotic cell cycle. It begins with an enzyme breaking the bonds between complementary bases in DNA which exposes the bases inside the molecules so they can be read by another enzyme and used to build two new DNA strands with complementary bases.

Explanation:

The original strand is: TAGCGTT

ATCGCAA

The Mutated strand is: TGGCGTT

ATCGCAA

The replicated strand is: GAATCAC

CTTAGTG

5 0

3 years ago

PLEASE HELP QUICKLY !!!!!!!!!

Blababa [14]

You answer is this! 0.10p

7 0

3 years ago

Plz help asap Due today and well I’m confused

dusya [7]

The Circulatory & Respiratory Systems Part 2

Directions: Answer these 2 prompts in a complete paragraph with topic & conclusion sentences, and relevant detail sentences in the body.

Rubric

5 Points

Answer is a complete paragraph with all necessary relevant details & correct use of key vocabulary.

4 Points

Answer is a complete paragraph with most necessary details & some key vocabulary

3 Points

May not be a complete paragraph, but includes most necessary details

2 Points

Some necessary details described

1 Point

Answer includes some related details

0 Points

No answer given or answer is incorrect/off topic

Beginning with the Superior Vena Cava (SVC) & Inferior Vena Cava (IVC) and ending with the aorta, explain the path that blood takes through the heart and lungs before returning to the body.

The Blood leaves the heart through the pulmonic and into the pulmonary artery and then to the lungs. Blood also leaves the heart through the aortic valve, into the aorta and to the body. This process results in blood flowing through the heart,lungs and body...

Fact if the circulatory or respiratory system were to fail, the other would fail as well, leading to death without medical intervention. Explain why failure of the circulatory system would cause failure of the respiratory system & Explain why failure of the respiratory system would cause failure of the circulatory system.

Failure of the respiratory system would cause failure of the circulatory system because the respiratory system helps you breath and with you not breathing it would cause the circulatory system to fail because the breathing makes the blood flow through the circulatory system.

8 0

3 years ago