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2 years ago

What term is defined as a stable mix of populations expected in a given area

1 answer:

3 0

The term that is asked in this problem would probably be the climax community.

In an environment, there is always that ongoing exchange of majority between the living organisms. This exchange of majority is observable upon plants and animals, but this would only be observable for a course of time. Thus, number of months or years is needed to observe such exchange. Logic would cut to the chase, but observing it with data would suffice for those who are likely to ask. After some more years, decades, or even centuries, an area that has lasted to such extent would achieve a stable mix of populations which is termed as climax community.

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An Asian elephant has a weight of 52,900 newtons. This enormous weight is balanced on four feet. In a circus act, these elephant

Aleonysh [2.5K]

Answer:

Option B, $18.11 \frac{N}{cm^{2}}$

Explanation:

Given-

The average surface area of one foot pad of an elephant is $2920$ $cm^{2}\\$

Weight of an Asian elephant is $52900$ newton

As we know, pressure is equal to total weight divided by total area of the surface on which it is concentrated.

Thus, pressure on one foot pad of elephant is $\frac{52900}{2920} \frac{N}{cm^{2}} \\$

$= 18.11\frac{N}{cm^{2}}$

Hence, option B is correct answer

7 0

2 years ago

Describe the Watson and Crick model of DNA structure. How did it fit the data provided by Chargaff and the X-ray diffraction pat

icang [17]

DNA model given by Watson and Creek in the year of 1953 gave a very detailed study regarding the structure of B DNA which is valid till date and is essentially corroborating with Chargaff's data and Xray diffraction pattern.

<h3><u>Explanation:</u></h3>

The DNA is the most common nucleic acid found in the living organisms as a genetic material. As stated by Watson and Creek, this DNA contains a double helical structure with two sugar phosphate backbones and the nitrogen bases getting projected from it inwards. The backbones are formed of ribose sugar and phosphate and joined together with a phosphodiester bond. The ribose sugar is attached to phosphates at its 3' and 5' Carbon atoms. The nitrogen bases found in DNA are Adenine, Guanine, Thymine and Cytosine. The Adenine has two hydrogen bonds with thymine and guanine has 3 hydrogen bonds with cytosine.

Each full turn of a helix is 34A and each base pair is 3.4A apart. The distance between two strands of DNA is 20A.

Chargaff's rule regarding the equal amount of adenine and thymine as well as guanine and cytosine is matching with this structure. All the other rules also do match with this DNA structure.

3 0

2 years ago

What part of the respiratory system is composed of a single layer of epithelial tissues surrounded by a network of capillaries?

svetlana [45]

I think the correct answer from the choices listed above is option A. It is the alveoli that is composed of single layer <span>surrounded by a network of capillaries. These are used to allow oxygen and carbon dioxide to move from the lungs to the bloodstream.</span>

6 0

3 years ago

Read 2 more answers

jekas [21]

a) volume in cm³ = 20 × 42 × 42 = 35280 cm³

b) volume in m³ = 0.2 × 0.42 × 0.42 = 0.03528 m³

c) volume in ml³ = 200 × 420 × 420 = 35280000 ml³

d) volume in litres = 0.02 × 0.042 × 0.042 = 0.00003528 l³

e) Density = Mass / Volume

Mass = Volume × density

= 0.00003528 × 1

= 0.00003528 × 1000

= 0.03528 grams

f) Mass in kilo gram = 0.00003528 kg

3 0

2 years ago

Which of the following are examples of stimuli?

Aneli [31]

Answer:

The answer is all of them

Explanation:

This is the answer because I’m a genius. You’re Welcome

6 0

2 years ago