Answer:
Introduction on Argentinian Red And, <em>Solenopsis invicta</em>, in the United States.
Explanation:
A species is considered to be introduced when it has been released intentionally or accidentally in a new place or area, out of its natural geographical distribution range, during historical times.
The, Argentinian Red Ant, Solenopsis invicta was introduced by accident in the United States in the 1930 year when some commercial ship coming from Brazil unloaded infested merchandise. Since that date, it has been colonizing several areas, expanding in a range of 30 to 50 kilometers per year. Nowadays it is occupying more than 110 million hectares, causing several problems:
- Biological problems: It is a very aggressive species that can <em>affect animals and plants</em>. In Texas, the <em>invertebrates' biodiversity decreased by 40% and the local ants decreased by 70%.</em> Their nests' building affects the roots of plants causing important <em>harvest losses</em>.
- Economical problems: The United States government has expended more than 250 million dollars trying to solve the problem, while the yearly losses exceed 1,000 dollars. The harvest losses have causes an important decrease in production.
- Sanitary problems: These ants might be considered dangerous as they have attacked people and animals. Texas invests 750,000 dollars a year to treat wounds in cattle and other affected animals.
There are some steps to prevent and reduce biological invasions, such as introduction prevention, eradication <em>when it is still possible</em>, contention to <em>avoid the species expansion</em>, expansion control (biological, mechanical, chemical), and restoration of the affected areas.
In the case of the Red Ant it would have been very important to control the state of the merchandise coming from Brazil to avoid the ant's introduction and its posterior spread. It also would have been important to deal harder with the problem when it was recently to avoid the ants' expansion by educating the people about invasive species and how to react about it, and by applying some eradication actions when it was possible. Nowadays the species is under control, but they can not completely eradicate it.
Answer:
C) Letter C because the emergence of a mature forest will resist changes to the ecosystem with the greatest success.
Explanation:
Ecosystem stability can be a factor of species diversity within a community. Which letter above would indicate the stage of success in an ecosystem that represents the greatest potential for stability and resilience?
A) Letter A because light levels are high and will promote the greatest growth of primary producers.
B) All letters represent equal opportunity for stability as the area of land does not change over time.
C) Letter C because the emergence of a mature forest will resist changes to the ecosystem with the greatest success.
D) Letter B because aspen, spruce, and pines can provide the most opportunity for primary consumers to hide from their predator species
It would be c.
Gravity force on earth: 9.8N or m/s estimed to 10N
818/10= 81.8 kg on earth
form the equation:
81.8×x=5320
If we solve this equation we will get an answer near 63.7 m/s.
I get why u were confused cause the way they word some of the answers literally doesn't make any mf sense
my best answer would be the 3rd one (sediment that is sorted by size due to the changing velocity of the water)
Explanation:
because when sediments are well sorted their sizes are similar
The diagram is used by biologists to determine the probability of an offspring having a particular genotype
