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Kamila [148]
3 years ago
8

How does natural selection operate to cause change in a population?

Biology
1 answer:
Nataly_w [17]3 years ago
7 0
The hole reason for natural selection is to keep the Eco system in balance take something away it will fall apart or if you put to much of something the same thing will happen. 
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What can result from weakening of digestive smooth muscle with age?
Alex17521 [72]

Answer:

Weakening of digestive smooth muscle with age can cause constipation.

Explanation:

Smooth muscles in the digestive system have the role to move food down the tract via radially symmetrical contractions (peristalsis). With age, the function of smooth muscles reduces, causing the food to move more slowly through the alimentary canal (digestive tract). As a consequence, water gets absorbed from food waste, which can cause constipation.

8 0
3 years ago
HELP PLEASE
Andreyy89

i think four phenotypes can be produced

7 0
2 years ago
Which is a property of every homogeneous mixture? Each part of the mixture has the same appearance. The mixture is made up of a
dsp73

Answer:

Each part of the mixture has the same appearance.

Explanation:

Homogeneous mixture consists of substances that mix evenly. Therefore has same appearance.

4 0
3 years ago
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.

<u><em>So answer A. Is the correct option.</em></u>

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
2 years ago
Gibberellic acid stimulates the cells of germinating grass seeds to produce mrna molecules that code for hydrolytic enzymes. In
Thepotemich [5.8K]

Answer:

In this case, Gibberellic acid acts as a transcription regulator

Explanation:

Gibberellic acid is a hormone that activates the transcription of genes during growth. The genes that encode for regulators of the gibberellin signaling pathway were manipulated in order to increase grain yields during the green revolution

4 0
3 years ago
Read 2 more answers
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