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kherson [118]
4 years ago
13

What is the relationship between Temperature in urchin survival

Biology
1 answer:
o-na [289]4 years ago
5 0

Sea urchin embryo requires temperature of 23 degrees to cleave, in lower temperatures the embryo cleavage slows down.

Explanation:

Although the sea urchins live in sea water in cold temperature, they require a temperature of around 23 degrees to cleave for fertilisation if this temperature is reduced the process of cleavage slows down eventually depleting the urchin population.

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The idea that Earth orbits the sun is referred to as ____ of the solar system, because of the scientist who first proposed it.​
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E. The Copernican model

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A pea plant with round seeds (RR) is crossbred with another pea plant with wrinkled seeds (rr). What is the probability of produ
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An electrocardiogram (ECG) provides information about ________. A. the pressure of blood in the heart chambers B. the rhythm of
mario62 [17]

An electrocardiogram (ECG) provides information about B) the rhythm of heart contractions

The rhythm of heart contractions can be known by an electrocardiogram (ECG).

An ECG or Electrocardiogram is a method to diagnose the heart conditions to check the normal functioning of the heart.

The process to measure the electrical signals of the heart can be done by using this machine.

In this technique, three leads are attached to both the wrist and the left ankle to measure the electrical activity of Heart. The rhythm of the heart contraction and relaxation can be used to find out any heart abnormality.

It is used to investigate the heart problems associated due to bad health or some chronic inflammation affecting the functioning the body. Shortness of breath or nausea is investigated by using an ECG machine to help the patient and doctor to find out the cause.

It consists of QRS complex which measures the heart beat.

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3 0
2 years ago
The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-Saharan Africa than among those o
ArbitrLikvidat [17]

Ans.

Sickle-cell disorder shows defected red blood cells, due to mutation in gene that code for hemoglobin. The mutated genes for sickle-cell disease are found in higher percentage of sub-Saharan African population as it provides protection against malaria as compared to population of United States.

Malaria is common in sub-Saharan Africa region and there, natural selection favored gene for sickle cells, because it might be beneficial to people having sickle cell disease that makes them able to survive in such condition and transmit their genes to offspring.

On the other hand, in those Africans, who moved to United States, where malaria is uncommon or absent, natural selection favored normal, wild type genes, resulting in fewer people with defected sickle cell.

Thus, the evolutionary process behind this is 'natural selection.'

5 0
4 years ago
I'll give you brainliest if you answer my question.
vitfil [10]

Answer:

  • <u>Environment:</u> All external conditions and factors, living and nonliving (chemical and energy), that affect an organism or other specified system during its lifetime.
  • <u>Generation</u>: our step in the line of descent of a family / all the people born and living about the same time.
  • <u>Phenotype</u>: An organism's physical appearance, or visible traits.
  • <u>Genotype</u>: An organism's genetic makeup, or allele combinations.
3 0
3 years ago
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