The perching birds would be forced to migrate to another area.
<h2>Answer:
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Option A) Active transport.
<h2>Explanation:
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- Active transport - Movement of molecules or ions from a lower concentration to a region of higher concentration(against a concentration gradient), by the use of enzymes and consuming energy(ATP), hence the substances move across plasma membrane against a concentration gradient.
- Osmosis is the process in which molecules of the solvent passes through a semipermeable membrane(plasma membrane in case of cell) from a less concentrated solution to more concentrated one along the concentrated gradient.
Energy is not required in this process and hence it is passive process.
- Diffusion is the movement of the molecules of a material from higher concentration to lower concentration.
- Facilitated diffusion is similar to diffusion, it the transport of substances across a biological membrane from an area of higher concentration to an area of lower concentration by the help of a carrier molecule.
Result: Active transport happens against a concentration gradient.
Blood alcohol concentration (bac) is defined as the ration of alcohol in the system to <u>blood</u> in the system.Also called blood alcohol concentration or blood alcohol level . The amount of alcohol which is present in the bloodstream.
A Blood alcohol concentration of 0.05% =0.05grams of Alcohol in every 100 milliliters of blood.It can be measured by breath,blood,or urine tests.High the percentage of alcohol higher the blood alcohol concentration. Levels can range from 0% to over 0.4% (a potentially fatal level).
It is a measurement of alcohol intoxication used for legal or medical purposes.There are some factors also which affects the blood alcohol concentration like - Age ,Tolerance, Metabolism, Medication,body, weight, etc
To learn more about alcohol intoxication here
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False.
In a dihybrid cross, the expected ratio of genotypes is 1:2:1:2:4:2:1:2:1.
In this example the ratio is 1:2:2:4:1:2:1:1:1. So, this ratio is false. It is expected 1<span>YYRR : 2YYRr : 1Yyrr : 2YyRr : 4YYrr : 2YyRR : 1yyRR : 2yyRr : 1yyrr.</span>