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oksian1 [2.3K]
3 years ago
13

What is gene flow?

Biology
1 answer:
just olya [345]3 years ago
8 0

Answer:

Two populations transferring genes

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Which of these was a uensequence of hawaiian contact with outsiders apex?
bulgar [2K]
Loss of control of their government
loss of independence
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For most terrestrial ecosystems, pyramids of numbers, biomass, and energy are essentially the same-they have a broad base and a
GaryK [48]

Answer:

b. at each step, energy is lost from the system as a result of keeping the organisms alive

Explanation:

Generally Ecological pyramids helps to visualise  the structure of Ecosystem.Its diagrammatically showed  the relative amounts of numbers of organisms ,their energy, and  the amount of energy that is converted in living tissue  as usable mass (biomass) at different tropic levels.

Basically, large amount of energy is lost as energy flow from one tropic level to  another in an ecosystem. This can be explained with the second law of thermodynamics;<u>  </u><u>which states that in the conversion of energy from one form to another in a system, there is always a tendency towards disorderliness</u><u>.</u>That is the entropy changes  of  the universe   can never be negative.Relatively  in a biological system, this means that  energy is lost in metabolic process( glycolysis, chemeosmosis, assimilation, growth .......)  as heat, as organisms at one tropic level is consumed  by another at the next level, from the base to the peak of  these pyramids.

The amount of energy transfer efficiency  among the two successive tropic levels is obtained by <u>dividing the energy transfer at present tropic level</u> with<u> the energy transfer at previous tropic levels</u> and<u> mutiply the results by 100%</u> . This known  as Tropic level transfer efficiency(TLTE) .

The lower energy efficiency between successful  present and previous tropic levels  in these pyramids accounts for  the similarities.

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4 years ago
Please helpppp meee I cant faillllll:(
marissa [1.9K]

Answer:

cysteine

Explanation:

The anticodon for ACA is UGU

in the left column find the U. From the top column find the G. From the right column find the last U. The amino acid at that location is cysteine

3 0
3 years ago
Why is it beneficial to use textiles made from synthetic fibers
mestny [16]
Synthetic fabrics<span> are </span>textiles made<span> from man-</span>made fibers<span> rather than natural </span>fibers. Chemically produced fabrics<span> are </span>made<span> by joining monomers into polymers, through a process called polymerization. A </span>synthetic fabric<span>, when magnified, looks like plastic spun together.</span><span>

Natural fabrics, such as cotton, silk, and wool, are made from animals or plant based fibers. While synthetic are man made and produced entirely from chemicals to create fabrics. such as polyester, rayon, acrylic, and more. The benefits of using textiles made from synthetic fibers is that it saves the animals and plants that the fibers are based off of. 

Hope this helped :)

</span>
5 0
4 years ago
Following an intense workout your clothes are drenched in sweat. You estimate you lost at least 0.5 L of sweat. Your (similarly
muminat

Answer:

I will have a greater increase in vasopressin secretion than my friend who donated blood.

Explanation:

Vasopressin, also known as Arginine vasopressin (AVP), Argipressin, or Antidiuretic hormone (ADH), is synthesized in the hypothalamus, and is released from the posterior pituitary gland, into the genreral circulation in response to a hypertonic extracellular fluid concentration. When a person looses a large volume of water from the body, from whatever cause, the blood becomes hypertonic, and the total volume of body fluids reduces (hypertonic, hypovolemic), in response to this change, ADH acts on the cells of the Distal Convoluted Tubule and Collecting Duct of the kidneys to reabsorb water into the blood, hence resulting in the excretion of a more concentrated urine with a reduced volume, this tends to return the tonicity of the blood towards the normal.

In the instances given in this example, when I lost 0.5L of sweat, which contains about 99% water, I loose more body water than my friend who donated blood with a total plasma volume of 0.5L, because plasma contains 92%, which is less volume of water than what I lost.

3 0
4 years ago
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