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ehidna [41]
2 years ago
14

Define and distinguish between diffusion and omosis​

Biology
1 answer:
Dmitry [639]2 years ago
5 0

Diffusion is the spontaneous movement of substances from a region of high concentration to a region of low concentration.

Osmosis is the passage of water molecules from a high water concentration region through a selectively permeable membrane to a low water concentration region.

In diffusion, selectively permeable membrane is neither required nor involved while in osmosis, it is involved.

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List two additional populations (other than those listed in the lab) for which
omeli [17]

Indirect methods like mark and recapture become a strong tool to estimate population size or density in species on which it is impossible to apply a direct methods. <em>Because of their biological and ecological characteristics, the Gypsy moth and the Green lizard populations are good examples  for which  mark and recapture would work well.</em>

<em>------------------------------------------------------</em>

There are different methods to study population density. There are direct methods and indirect methods. Among these last ones, we might find the Mark-Recapture technique.

The Mark-Recapture technique assumes that

  • <em>the population is closed during the sampling season, there is no mortality nor natality, </em>
  • <em>marks in the individual last the whole sampling season, and they do not affect the marked individual or their behavior. </em>
  • <em>marked individuals are randomly distributed in the population, and </em>
  • <em>all the individuals have the same probability of being sampled.</em>

The method consists of capturing a sample of individuals belonging to the population under study. After capturing the individuals, the researcher marks and releases them again. The third step is to sample again: The researcher captures new individuals and counts how many of them are marked. These marked individuals belong to the first sample.

Indirect methods like this become a strong tool to estimate population size or density in species on which it is impossible to apply a direct method such as <em>counting individuals</em>.

For instance, if we need to estimate insects population density (<u><em>Gypsy moth population</em></u>) or reptiles population density (<u><em>Green lizard population</em></u>) because of their biological and ecological characteristics, the best way of doing it is by applying indirect methods. <em>These species characterize as small-sized, fast to escape, they can hide in small inaccessible places, they have nocturnal habits, their reproductive rate is too high, and their distribution rate is wide. </em>Among many other characteristics, their population density can not be estimated by direct methods. Mark-Recapture technique is the most suitable one.

----------------------------------------------

Related link: brainly.com/question/10646744?referrer=searchResults

6 0
3 years ago
3 processes of the water cycle<br><br><br>please i really need help this is due on jan 23!!!!! ​
netineya [11]

Answer:

Of the many processes involved in the water cycle, the most important are evaporation, transpiration, condensation, precipitation

Explanation:

8 0
3 years ago
Give three examples of what an ecosystem service is
Pavel [41]

Answer:

Examples of ecosystem services include products such as food and water, regulation of floods, soil erosion and disease outbreaks, and non-material benefits such as recreational and spiritual benefits in natural areas.

8 0
3 years ago
Suppose a chemical was to spill onto the ground and get into the soil. The
chubhunter [2.5K]

Answer:

To clean groundwater you must:

Explanation:

Eliminate the pollution source: An underground tank must be pumped dry and then dug out from the ground. A factory must be required to stop releasing toxic chemicals. Farms must be more careful about the chemicals they put on their fields.

Monitor the extent of the pollutant: Scientists test water in wells. Sometimes they drill wells to test water. They learn how the groundwater is flowing: how fast and in what direction. They study the contaminants in the groundwater. Then they determine where the contaminant plume is going.

8 0
3 years ago
Scholars believe that saint luke drawing the virgin (3.6.12) is meant to show the importance of ________
hjlf

St Luke Drawing the Virgin, a masterpiece by the Dutch painter Rogier van der Weyden made in the 15th century, depicts St. Luke the Evangelist sketching the Virgin Mary as she nurses the Child Jesus. The painting is unusually rich in details, as the figures are inside an upper-class parlor that leads toward a courtyard, river, town, and landscape – a scene not even possible in movies. Despite a lot of that, the scene is perfectly balanced. Scholars believe that the painter made the painting not only to depict the artist’s adoration to the Madonna and a salute to St. Luke (patron saint of painters), but also to boast his own skill in composition and design.

7 0
3 years ago
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